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);
201 void open_output_file(const std::string &filename);
202 void close_output_file();
205 struct storage_task {
206 unsigned long long display_order;
211 struct PendingFrame {
212 RefCountedGLsync fence;
213 vector<RefCountedFrame> input_frames;
217 // So we never get negative dts.
218 int64_t global_delay() const {
219 return int64_t(ip_period - 1) * (TIMEBASE / MAX_FPS);
222 void encode_thread_func();
223 void encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts);
224 void add_packet_for_uncompressed_frame(int64_t pts, const uint8_t *data);
225 void encode_frame(PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
226 int frame_type, int64_t pts, int64_t dts);
227 void storage_task_thread();
228 void encode_audio(const vector<float> &audio,
230 AVCodecContext *ctx);
231 void storage_task_enqueue(storage_task task);
232 void save_codeddata(storage_task task);
233 int render_packedsequence();
234 int render_packedpicture();
235 void render_packedslice();
236 int render_sequence();
237 int render_picture(int frame_type, int display_frame_num, int gop_start_display_frame_num);
238 void sps_rbsp(bitstream *bs);
239 void pps_rbsp(bitstream *bs);
240 int build_packed_pic_buffer(unsigned char **header_buffer);
241 int render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type);
242 void slice_header(bitstream *bs);
243 int build_packed_seq_buffer(unsigned char **header_buffer);
244 int build_packed_slice_buffer(unsigned char **header_buffer);
245 int init_va(const string &va_display);
247 void enable_zerocopy_if_possible();
248 VADisplay va_open_display(const string &va_display);
249 void va_close_display(VADisplay va_dpy);
251 int release_encode();
252 void update_ReferenceFrames(int frame_type);
253 int update_RefPicList(int frame_type);
255 bool is_shutdown = false;
259 thread encode_thread, storage_thread;
261 mutex storage_task_queue_mutex;
262 condition_variable storage_task_queue_changed;
263 int srcsurface_status[SURFACE_NUM]; // protected by storage_task_queue_mutex
264 queue<storage_task> storage_task_queue; // protected by storage_task_queue_mutex
265 bool storage_thread_should_quit = false; // protected by storage_task_queue_mutex
267 mutex frame_queue_mutex;
268 condition_variable frame_queue_nonempty;
269 bool encode_thread_should_quit = false; // under frame_queue_mutex
271 int current_storage_frame;
273 map<int, PendingFrame> pending_video_frames; // under frame_queue_mutex
274 map<int64_t, vector<float>> pending_audio_frames; // under frame_queue_mutex
277 AVCodecContext *context_audio;
278 AVFrame *audio_frame = nullptr;
280 unique_ptr<FrameReorderer> reorderer;
282 Display *x11_display = nullptr;
284 // Encoder parameters
286 VAProfile h264_profile = (VAProfile)~0;
287 VAConfigAttrib config_attrib[VAConfigAttribTypeMax];
288 int config_attrib_num = 0, enc_packed_header_idx;
291 VASurfaceID src_surface, ref_surface;
292 VABufferID coded_buf;
294 VAImage surface_image;
295 GLuint y_tex, cbcr_tex;
297 // Only if use_zerocopy == true.
298 EGLImage y_egl_image, cbcr_egl_image;
300 // Only if use_zerocopy == false.
302 uint8_t *y_ptr, *cbcr_ptr;
303 size_t y_offset, cbcr_offset;
305 GLSurface gl_surfaces[SURFACE_NUM];
307 VAConfigID config_id;
308 VAContextID context_id;
309 VAEncSequenceParameterBufferH264 seq_param;
310 VAEncPictureParameterBufferH264 pic_param;
311 VAEncSliceParameterBufferH264 slice_param;
312 VAPictureH264 CurrentCurrPic;
313 VAPictureH264 ReferenceFrames[MAX_NUM_REF1], RefPicList0_P[MAX_NUM_REF2], RefPicList0_B[MAX_NUM_REF2], RefPicList1_B[MAX_NUM_REF2];
315 // Static quality settings.
316 static constexpr unsigned int frame_bitrate = 15000000 / 60; // Doesn't really matter; only initial_qp does.
317 static constexpr unsigned int num_ref_frames = 2;
318 static constexpr int initial_qp = 15;
319 static constexpr int minimal_qp = 0;
320 static constexpr int intra_period = 30;
321 static constexpr int intra_idr_period = MAX_FPS; // About a second; more at lower frame rates. Not ideal.
323 // Quality settings that are meant to be static, but might be overridden
325 int constraint_set_flag = 0;
326 int h264_packedheader = 0; /* support pack header? */
327 int h264_maxref = (1<<16|1);
328 int h264_entropy_mode = 1; /* cabac */
332 unsigned int current_frame_num = 0;
333 unsigned int numShortTerm = 0;
337 int frame_width_mbaligned;
338 int frame_height_mbaligned;
340 unique_ptr<Mux> file_mux; // To local disk.
343 // Supposedly vaRenderPicture() is supposed to destroy the buffer implicitly,
344 // but if we don't delete it here, we get leaks. The GStreamer implementation
346 static void render_picture_and_delete(VADisplay dpy, VAContextID context, VABufferID *buffers, int num_buffers)
348 VAStatus va_status = vaRenderPicture(dpy, context, buffers, num_buffers);
349 CHECK_VASTATUS(va_status, "vaRenderPicture");
351 for (int i = 0; i < num_buffers; ++i) {
352 va_status = vaDestroyBuffer(dpy, buffers[i]);
353 CHECK_VASTATUS(va_status, "vaDestroyBuffer");
358 va_swap32(unsigned int val)
360 unsigned char *pval = (unsigned char *)&val;
362 return ((pval[0] << 24) |
369 bitstream_start(bitstream *bs)
371 bs->max_size_in_dword = BITSTREAM_ALLOCATE_STEPPING;
372 bs->buffer = (unsigned int *)calloc(bs->max_size_in_dword * sizeof(int), 1);
377 bitstream_end(bitstream *bs)
379 int pos = (bs->bit_offset >> 5);
380 int bit_offset = (bs->bit_offset & 0x1f);
381 int bit_left = 32 - bit_offset;
384 bs->buffer[pos] = va_swap32((bs->buffer[pos] << bit_left));
389 bitstream_put_ui(bitstream *bs, unsigned int val, int size_in_bits)
391 int pos = (bs->bit_offset >> 5);
392 int bit_offset = (bs->bit_offset & 0x1f);
393 int bit_left = 32 - bit_offset;
398 bs->bit_offset += size_in_bits;
400 if (bit_left > size_in_bits) {
401 bs->buffer[pos] = (bs->buffer[pos] << size_in_bits | val);
403 size_in_bits -= bit_left;
404 if (bit_left >= 32) {
405 bs->buffer[pos] = (val >> size_in_bits);
407 bs->buffer[pos] = (bs->buffer[pos] << bit_left) | (val >> size_in_bits);
409 bs->buffer[pos] = va_swap32(bs->buffer[pos]);
411 if (pos + 1 == bs->max_size_in_dword) {
412 bs->max_size_in_dword += BITSTREAM_ALLOCATE_STEPPING;
413 bs->buffer = (unsigned int *)realloc(bs->buffer, bs->max_size_in_dword * sizeof(unsigned int));
416 bs->buffer[pos + 1] = val;
421 bitstream_put_ue(bitstream *bs, unsigned int val)
423 int size_in_bits = 0;
431 bitstream_put_ui(bs, 0, size_in_bits - 1); // leading zero
432 bitstream_put_ui(bs, val, size_in_bits);
436 bitstream_put_se(bitstream *bs, int val)
438 unsigned int new_val;
443 new_val = 2 * val - 1;
445 bitstream_put_ue(bs, new_val);
449 bitstream_byte_aligning(bitstream *bs, int bit)
451 int bit_offset = (bs->bit_offset & 0x7);
452 int bit_left = 8 - bit_offset;
458 assert(bit == 0 || bit == 1);
461 new_val = (1 << bit_left) - 1;
465 bitstream_put_ui(bs, new_val, bit_left);
469 rbsp_trailing_bits(bitstream *bs)
471 bitstream_put_ui(bs, 1, 1);
472 bitstream_byte_aligning(bs, 0);
475 static void nal_start_code_prefix(bitstream *bs)
477 bitstream_put_ui(bs, 0x00000001, 32);
480 static void nal_header(bitstream *bs, int nal_ref_idc, int nal_unit_type)
482 bitstream_put_ui(bs, 0, 1); /* forbidden_zero_bit: 0 */
483 bitstream_put_ui(bs, nal_ref_idc, 2);
484 bitstream_put_ui(bs, nal_unit_type, 5);
487 void H264EncoderImpl::sps_rbsp(bitstream *bs)
489 int profile_idc = PROFILE_IDC_BASELINE;
491 if (h264_profile == VAProfileH264High)
492 profile_idc = PROFILE_IDC_HIGH;
493 else if (h264_profile == VAProfileH264Main)
494 profile_idc = PROFILE_IDC_MAIN;
496 bitstream_put_ui(bs, profile_idc, 8); /* profile_idc */
497 bitstream_put_ui(bs, !!(constraint_set_flag & 1), 1); /* constraint_set0_flag */
498 bitstream_put_ui(bs, !!(constraint_set_flag & 2), 1); /* constraint_set1_flag */
499 bitstream_put_ui(bs, !!(constraint_set_flag & 4), 1); /* constraint_set2_flag */
500 bitstream_put_ui(bs, !!(constraint_set_flag & 8), 1); /* constraint_set3_flag */
501 bitstream_put_ui(bs, 0, 4); /* reserved_zero_4bits */
502 bitstream_put_ui(bs, seq_param.level_idc, 8); /* level_idc */
503 bitstream_put_ue(bs, seq_param.seq_parameter_set_id); /* seq_parameter_set_id */
505 if ( profile_idc == PROFILE_IDC_HIGH) {
506 bitstream_put_ue(bs, 1); /* chroma_format_idc = 1, 4:2:0 */
507 bitstream_put_ue(bs, 0); /* bit_depth_luma_minus8 */
508 bitstream_put_ue(bs, 0); /* bit_depth_chroma_minus8 */
509 bitstream_put_ui(bs, 0, 1); /* qpprime_y_zero_transform_bypass_flag */
510 bitstream_put_ui(bs, 0, 1); /* seq_scaling_matrix_present_flag */
513 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_frame_num_minus4); /* log2_max_frame_num_minus4 */
514 bitstream_put_ue(bs, seq_param.seq_fields.bits.pic_order_cnt_type); /* pic_order_cnt_type */
516 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0)
517 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4); /* log2_max_pic_order_cnt_lsb_minus4 */
522 bitstream_put_ue(bs, seq_param.max_num_ref_frames); /* num_ref_frames */
523 bitstream_put_ui(bs, 0, 1); /* gaps_in_frame_num_value_allowed_flag */
525 bitstream_put_ue(bs, seq_param.picture_width_in_mbs - 1); /* pic_width_in_mbs_minus1 */
526 bitstream_put_ue(bs, seq_param.picture_height_in_mbs - 1); /* pic_height_in_map_units_minus1 */
527 bitstream_put_ui(bs, seq_param.seq_fields.bits.frame_mbs_only_flag, 1); /* frame_mbs_only_flag */
529 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
533 bitstream_put_ui(bs, seq_param.seq_fields.bits.direct_8x8_inference_flag, 1); /* direct_8x8_inference_flag */
534 bitstream_put_ui(bs, seq_param.frame_cropping_flag, 1); /* frame_cropping_flag */
536 if (seq_param.frame_cropping_flag) {
537 bitstream_put_ue(bs, seq_param.frame_crop_left_offset); /* frame_crop_left_offset */
538 bitstream_put_ue(bs, seq_param.frame_crop_right_offset); /* frame_crop_right_offset */
539 bitstream_put_ue(bs, seq_param.frame_crop_top_offset); /* frame_crop_top_offset */
540 bitstream_put_ue(bs, seq_param.frame_crop_bottom_offset); /* frame_crop_bottom_offset */
543 //if ( frame_bit_rate < 0 ) { //TODO EW: the vui header isn't correct
545 bitstream_put_ui(bs, 0, 1); /* vui_parameters_present_flag */
547 bitstream_put_ui(bs, 1, 1); /* vui_parameters_present_flag */
548 bitstream_put_ui(bs, 0, 1); /* aspect_ratio_info_present_flag */
549 bitstream_put_ui(bs, 0, 1); /* overscan_info_present_flag */
550 bitstream_put_ui(bs, 1, 1); /* video_signal_type_present_flag */
552 bitstream_put_ui(bs, 5, 3); /* video_format (5 = Unspecified) */
553 bitstream_put_ui(bs, 0, 1); /* video_full_range_flag */
554 bitstream_put_ui(bs, 1, 1); /* colour_description_present_flag */
556 bitstream_put_ui(bs, 1, 8); /* colour_primaries (1 = BT.709) */
557 bitstream_put_ui(bs, 2, 8); /* transfer_characteristics (2 = unspecified, since we use sRGB) */
558 bitstream_put_ui(bs, 6, 8); /* matrix_coefficients (6 = BT.601/SMPTE 170M) */
561 bitstream_put_ui(bs, 0, 1); /* chroma_loc_info_present_flag */
562 bitstream_put_ui(bs, 1, 1); /* timing_info_present_flag */
564 bitstream_put_ui(bs, 1, 32); // FPS
565 bitstream_put_ui(bs, TIMEBASE * 2, 32); // FPS
566 bitstream_put_ui(bs, 1, 1);
568 bitstream_put_ui(bs, 1, 1); /* nal_hrd_parameters_present_flag */
571 bitstream_put_ue(bs, 0); /* cpb_cnt_minus1 */
572 bitstream_put_ui(bs, 4, 4); /* bit_rate_scale */
573 bitstream_put_ui(bs, 6, 4); /* cpb_size_scale */
575 bitstream_put_ue(bs, frame_bitrate - 1); /* bit_rate_value_minus1[0] */
576 bitstream_put_ue(bs, frame_bitrate*8 - 1); /* cpb_size_value_minus1[0] */
577 bitstream_put_ui(bs, 1, 1); /* cbr_flag[0] */
579 bitstream_put_ui(bs, 23, 5); /* initial_cpb_removal_delay_length_minus1 */
580 bitstream_put_ui(bs, 23, 5); /* cpb_removal_delay_length_minus1 */
581 bitstream_put_ui(bs, 23, 5); /* dpb_output_delay_length_minus1 */
582 bitstream_put_ui(bs, 23, 5); /* time_offset_length */
584 bitstream_put_ui(bs, 0, 1); /* vcl_hrd_parameters_present_flag */
585 bitstream_put_ui(bs, 0, 1); /* low_delay_hrd_flag */
587 bitstream_put_ui(bs, 0, 1); /* pic_struct_present_flag */
588 bitstream_put_ui(bs, 0, 1); /* bitstream_restriction_flag */
591 rbsp_trailing_bits(bs); /* rbsp_trailing_bits */
595 void H264EncoderImpl::pps_rbsp(bitstream *bs)
597 bitstream_put_ue(bs, pic_param.pic_parameter_set_id); /* pic_parameter_set_id */
598 bitstream_put_ue(bs, pic_param.seq_parameter_set_id); /* seq_parameter_set_id */
600 bitstream_put_ui(bs, pic_param.pic_fields.bits.entropy_coding_mode_flag, 1); /* entropy_coding_mode_flag */
602 bitstream_put_ui(bs, 0, 1); /* pic_order_present_flag: 0 */
604 bitstream_put_ue(bs, 0); /* num_slice_groups_minus1 */
606 bitstream_put_ue(bs, pic_param.num_ref_idx_l0_active_minus1); /* num_ref_idx_l0_active_minus1 */
607 bitstream_put_ue(bs, pic_param.num_ref_idx_l1_active_minus1); /* num_ref_idx_l1_active_minus1 1 */
609 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_pred_flag, 1); /* weighted_pred_flag: 0 */
610 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_bipred_idc, 2); /* weighted_bipred_idc: 0 */
612 bitstream_put_se(bs, pic_param.pic_init_qp - 26); /* pic_init_qp_minus26 */
613 bitstream_put_se(bs, 0); /* pic_init_qs_minus26 */
614 bitstream_put_se(bs, 0); /* chroma_qp_index_offset */
616 bitstream_put_ui(bs, pic_param.pic_fields.bits.deblocking_filter_control_present_flag, 1); /* deblocking_filter_control_present_flag */
617 bitstream_put_ui(bs, 0, 1); /* constrained_intra_pred_flag */
618 bitstream_put_ui(bs, 0, 1); /* redundant_pic_cnt_present_flag */
621 bitstream_put_ui(bs, pic_param.pic_fields.bits.transform_8x8_mode_flag, 1); /*transform_8x8_mode_flag */
622 bitstream_put_ui(bs, 0, 1); /* pic_scaling_matrix_present_flag */
623 bitstream_put_se(bs, pic_param.second_chroma_qp_index_offset ); /*second_chroma_qp_index_offset */
625 rbsp_trailing_bits(bs);
628 void H264EncoderImpl::slice_header(bitstream *bs)
630 int first_mb_in_slice = slice_param.macroblock_address;
632 bitstream_put_ue(bs, first_mb_in_slice); /* first_mb_in_slice: 0 */
633 bitstream_put_ue(bs, slice_param.slice_type); /* slice_type */
634 bitstream_put_ue(bs, slice_param.pic_parameter_set_id); /* pic_parameter_set_id: 0 */
635 bitstream_put_ui(bs, pic_param.frame_num, seq_param.seq_fields.bits.log2_max_frame_num_minus4 + 4); /* frame_num */
637 /* frame_mbs_only_flag == 1 */
638 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
643 if (pic_param.pic_fields.bits.idr_pic_flag)
644 bitstream_put_ue(bs, slice_param.idr_pic_id); /* idr_pic_id: 0 */
646 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0) {
647 bitstream_put_ui(bs, pic_param.CurrPic.TopFieldOrderCnt, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 + 4);
648 /* pic_order_present_flag == 0 */
654 /* redundant_pic_cnt_present_flag == 0 */
656 if (IS_P_SLICE(slice_param.slice_type)) {
657 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
659 if (slice_param.num_ref_idx_active_override_flag)
660 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
662 /* ref_pic_list_reordering */
663 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
664 } else if (IS_B_SLICE(slice_param.slice_type)) {
665 bitstream_put_ui(bs, slice_param.direct_spatial_mv_pred_flag, 1); /* direct_spatial_mv_pred: 1 */
667 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
669 if (slice_param.num_ref_idx_active_override_flag) {
670 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
671 bitstream_put_ue(bs, slice_param.num_ref_idx_l1_active_minus1);
674 /* ref_pic_list_reordering */
675 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
676 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l1: 0 */
679 if ((pic_param.pic_fields.bits.weighted_pred_flag &&
680 IS_P_SLICE(slice_param.slice_type)) ||
681 ((pic_param.pic_fields.bits.weighted_bipred_idc == 1) &&
682 IS_B_SLICE(slice_param.slice_type))) {
683 /* FIXME: fill weight/offset table */
687 /* dec_ref_pic_marking */
688 if (pic_param.pic_fields.bits.reference_pic_flag) { /* nal_ref_idc != 0 */
689 unsigned char no_output_of_prior_pics_flag = 0;
690 unsigned char long_term_reference_flag = 0;
691 unsigned char adaptive_ref_pic_marking_mode_flag = 0;
693 if (pic_param.pic_fields.bits.idr_pic_flag) {
694 bitstream_put_ui(bs, no_output_of_prior_pics_flag, 1); /* no_output_of_prior_pics_flag: 0 */
695 bitstream_put_ui(bs, long_term_reference_flag, 1); /* long_term_reference_flag: 0 */
697 bitstream_put_ui(bs, adaptive_ref_pic_marking_mode_flag, 1); /* adaptive_ref_pic_marking_mode_flag: 0 */
701 if (pic_param.pic_fields.bits.entropy_coding_mode_flag &&
702 !IS_I_SLICE(slice_param.slice_type))
703 bitstream_put_ue(bs, slice_param.cabac_init_idc); /* cabac_init_idc: 0 */
705 bitstream_put_se(bs, slice_param.slice_qp_delta); /* slice_qp_delta: 0 */
707 /* ignore for SP/SI */
709 if (pic_param.pic_fields.bits.deblocking_filter_control_present_flag) {
710 bitstream_put_ue(bs, slice_param.disable_deblocking_filter_idc); /* disable_deblocking_filter_idc: 0 */
712 if (slice_param.disable_deblocking_filter_idc != 1) {
713 bitstream_put_se(bs, slice_param.slice_alpha_c0_offset_div2); /* slice_alpha_c0_offset_div2: 2 */
714 bitstream_put_se(bs, slice_param.slice_beta_offset_div2); /* slice_beta_offset_div2: 2 */
718 if (pic_param.pic_fields.bits.entropy_coding_mode_flag) {
719 bitstream_byte_aligning(bs, 1);
723 int H264EncoderImpl::build_packed_pic_buffer(unsigned char **header_buffer)
727 bitstream_start(&bs);
728 nal_start_code_prefix(&bs);
729 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_PPS);
733 *header_buffer = (unsigned char *)bs.buffer;
734 return bs.bit_offset;
738 H264EncoderImpl::build_packed_seq_buffer(unsigned char **header_buffer)
742 bitstream_start(&bs);
743 nal_start_code_prefix(&bs);
744 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_SPS);
748 *header_buffer = (unsigned char *)bs.buffer;
749 return bs.bit_offset;
752 int H264EncoderImpl::build_packed_slice_buffer(unsigned char **header_buffer)
755 int is_idr = !!pic_param.pic_fields.bits.idr_pic_flag;
756 int is_ref = !!pic_param.pic_fields.bits.reference_pic_flag;
758 bitstream_start(&bs);
759 nal_start_code_prefix(&bs);
761 if (IS_I_SLICE(slice_param.slice_type)) {
762 nal_header(&bs, NAL_REF_IDC_HIGH, is_idr ? NAL_IDR : NAL_NON_IDR);
763 } else if (IS_P_SLICE(slice_param.slice_type)) {
764 nal_header(&bs, NAL_REF_IDC_MEDIUM, NAL_NON_IDR);
766 assert(IS_B_SLICE(slice_param.slice_type));
767 nal_header(&bs, is_ref ? NAL_REF_IDC_LOW : NAL_REF_IDC_NONE, NAL_NON_IDR);
773 *header_buffer = (unsigned char *)bs.buffer;
774 return bs.bit_offset;
779 Assume frame sequence is: Frame#0, #1, #2, ..., #M, ..., #X, ... (encoding order)
780 1) period between Frame #X and Frame #N = #X - #N
781 2) 0 means infinite for intra_period/intra_idr_period, and 0 is invalid for ip_period
782 3) intra_idr_period % intra_period (intra_period > 0) and intra_period % ip_period must be 0
783 4) intra_period and intra_idr_period take precedence over ip_period
784 5) if ip_period > 1, intra_period and intra_idr_period are not the strict periods
785 of I/IDR frames, see bellow examples
786 -------------------------------------------------------------------
787 intra_period intra_idr_period ip_period frame sequence (intra_period/intra_idr_period/ip_period)
788 0 ignored 1 IDRPPPPPPP ... (No IDR/I any more)
789 0 ignored >=2 IDR(PBB)(PBB)... (No IDR/I any more)
790 1 0 ignored IDRIIIIIII... (No IDR any more)
791 1 1 ignored IDR IDR IDR IDR...
792 1 >=2 ignored IDRII IDRII IDR... (1/3/ignore)
793 >=2 0 1 IDRPPP IPPP I... (3/0/1)
794 >=2 0 >=2 IDR(PBB)(PBB)(IBB) (6/0/3)
795 (PBB)(IBB)(PBB)(IBB)...
796 >=2 >=2 1 IDRPPPPP IPPPPP IPPPPP (6/18/1)
797 IDRPPPPP IPPPPP IPPPPP...
798 >=2 >=2 >=2 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)} (6/18/3)
799 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)}...
800 {IDR(PBB)(PBB)(IBB)(PBB)} (6/12/3)
801 {IDR(PBB)(PBB)(IBB)(PBB)}...
802 {IDR(PBB)(PBB)} (6/6/3)
806 // General pts/dts strategy:
808 // Getting pts and dts right with variable frame rate (VFR) and B-frames can be a
809 // bit tricky. We assume first of all that the frame rate never goes _above_
810 // MAX_FPS, which gives us a frame period N. The decoder can always decode
811 // in at least this speed, as long at dts <= pts (the frame is not attempted
812 // presented before it is decoded). Furthermore, we never have longer chains of
813 // B-frames than a fixed constant C. (In a B-frame chain, we say that the base
814 // I/P-frame has order O=0, the B-frame depending on it directly has order O=1,
815 // etc. The last frame in the chain, which no B-frames depend on, is the “tip”
816 // frame, with an order O <= C.)
818 // Many strategies are possible, but we establish these rules:
820 // - Tip frames have dts = pts - (C-O)*N.
821 // - Non-tip frames have dts = dts_last + N.
823 // An example, with C=2 and N=10 and the data flow showed with arrows:
826 // pts: 30 40 50 60 70 80
828 // dts: 10 30 20 60 50←40
833 // To show that this works fine also with irregular spacings, let's say that
834 // the third frame is delayed a bit (something earlier was dropped). Now the
835 // situation looks like this:
838 // pts: 30 40 80 90 100 110
840 // dts: 10 30 20 90 50←40
845 // The resetting on every tip frame makes sure dts never ends up lagging a lot
846 // behind pts, and the subtraction of (C-O)*N makes sure pts <= dts.
848 // In the output of this function, if <dts_lag> is >= 0, it means to reset the
849 // dts from the current pts minus <dts_lag>, while if it's -1, the frame is not
850 // a tip frame and should be given a dts based on the previous one.
855 void encoding2display_order(
856 int encoding_order, int intra_period,
857 int intra_idr_period, int ip_period,
858 int *displaying_order,
859 int *frame_type, int *pts_lag)
861 int encoding_order_gop = 0;
865 if (intra_period == 1) { /* all are I/IDR frames */
866 *displaying_order = encoding_order;
867 if (intra_idr_period == 0)
868 *frame_type = (encoding_order == 0)?FRAME_IDR:FRAME_I;
870 *frame_type = (encoding_order % intra_idr_period == 0)?FRAME_IDR:FRAME_I;
874 if (intra_period == 0)
875 intra_idr_period = 0;
877 if (ip_period == 1) {
878 // No B-frames, sequence is like IDR PPPPP IPPPPP.
879 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % intra_idr_period);
880 *displaying_order = encoding_order;
882 if (encoding_order_gop == 0) { /* the first frame */
883 *frame_type = FRAME_IDR;
884 } else if (intra_period != 0 && /* have I frames */
885 encoding_order_gop >= 2 &&
886 (encoding_order_gop % intra_period == 0)) {
887 *frame_type = FRAME_I;
889 *frame_type = FRAME_P;
894 // We have B-frames. Sequence is like IDR (PBB)(PBB)(IBB)(PBB).
895 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % (intra_idr_period + 1));
896 *pts_lag = -1; // Most frames are not tip frames.
898 if (encoding_order_gop == 0) { /* the first frame */
899 *frame_type = FRAME_IDR;
900 *displaying_order = encoding_order;
901 // IDR frames are a special case; I honestly can't find the logic behind
902 // why this is the right thing, but it seems to line up nicely in practice :-)
903 *pts_lag = TIMEBASE / MAX_FPS;
904 } else if (((encoding_order_gop - 1) % ip_period) != 0) { /* B frames */
905 *frame_type = FRAME_B;
906 *displaying_order = encoding_order - 1;
907 if ((encoding_order_gop % ip_period) == 0) {
908 *pts_lag = 0; // Last B-frame.
910 } else if (intra_period != 0 && /* have I frames */
911 encoding_order_gop >= 2 &&
912 ((encoding_order_gop - 1) / ip_period % (intra_period / ip_period)) == 0) {
913 *frame_type = FRAME_I;
914 *displaying_order = encoding_order + ip_period - 1;
916 *frame_type = FRAME_P;
917 *displaying_order = encoding_order + ip_period - 1;
922 static const char *rc_to_string(int rc_mode)
935 case VA_RC_VBR_CONSTRAINED:
936 return "VBR_CONSTRAINED";
942 void H264EncoderImpl::enable_zerocopy_if_possible()
944 if (global_flags.uncompressed_video_to_http) {
945 fprintf(stderr, "Disabling zerocopy H.264 encoding due to --uncompressed_video_to_http.\n");
946 use_zerocopy = false;
952 VADisplay H264EncoderImpl::va_open_display(const string &va_display)
954 if (va_display.empty()) {
955 x11_display = XOpenDisplay(NULL);
957 fprintf(stderr, "error: can't connect to X server!\n");
960 enable_zerocopy_if_possible();
961 return vaGetDisplay(x11_display);
962 } else if (va_display[0] != '/') {
963 x11_display = XOpenDisplay(va_display.c_str());
965 fprintf(stderr, "error: can't connect to X server!\n");
968 enable_zerocopy_if_possible();
969 return vaGetDisplay(x11_display);
971 drm_fd = open(va_display.c_str(), O_RDWR);
973 perror(va_display.c_str());
976 use_zerocopy = false;
977 return vaGetDisplayDRM(drm_fd);
981 void H264EncoderImpl::va_close_display(VADisplay va_dpy)
984 XCloseDisplay(x11_display);
985 x11_display = nullptr;
992 int H264EncoderImpl::init_va(const string &va_display)
994 VAProfile profile_list[]={VAProfileH264High, VAProfileH264Main, VAProfileH264Baseline, VAProfileH264ConstrainedBaseline};
995 VAEntrypoint *entrypoints;
996 int num_entrypoints, slice_entrypoint;
997 int support_encode = 0;
998 int major_ver, minor_ver;
1002 va_dpy = va_open_display(va_display);
1003 va_status = vaInitialize(va_dpy, &major_ver, &minor_ver);
1004 CHECK_VASTATUS(va_status, "vaInitialize");
1006 num_entrypoints = vaMaxNumEntrypoints(va_dpy);
1007 entrypoints = (VAEntrypoint *)malloc(num_entrypoints * sizeof(*entrypoints));
1009 fprintf(stderr, "error: failed to initialize VA entrypoints array\n");
1013 /* use the highest profile */
1014 for (i = 0; i < sizeof(profile_list)/sizeof(profile_list[0]); i++) {
1015 if ((h264_profile != ~0) && h264_profile != profile_list[i])
1018 h264_profile = profile_list[i];
1019 vaQueryConfigEntrypoints(va_dpy, h264_profile, entrypoints, &num_entrypoints);
1020 for (slice_entrypoint = 0; slice_entrypoint < num_entrypoints; slice_entrypoint++) {
1021 if (entrypoints[slice_entrypoint] == VAEntrypointEncSlice) {
1026 if (support_encode == 1)
1030 if (support_encode == 0) {
1031 printf("Can't find VAEntrypointEncSlice for H264 profiles. If you are using a non-Intel GPU\n");
1032 printf("but have one in your system, try launching Nageru with --va-display /dev/dri/renderD128\n");
1033 printf("to use VA-API against DRM instead of X11.\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);
1204 if (!use_zerocopy) {
1206 glBindTexture(GL_TEXTURE_2D, gl_surfaces[i].y_tex);
1207 glTexStorage2D(GL_TEXTURE_2D, 1, GL_R8, frame_width, frame_height);
1209 // Create CbCr image.
1210 glBindTexture(GL_TEXTURE_2D, gl_surfaces[i].cbcr_tex);
1211 glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG8, frame_width / 2, frame_height / 2);
1213 // Generate a PBO to read into. It doesn't necessarily fit 1:1 with the VA-API
1214 // buffers, due to potentially differing pitch.
1215 glGenBuffers(1, &gl_surfaces[i].pbo);
1216 glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1217 glBufferStorage(GL_PIXEL_PACK_BUFFER, frame_width * frame_height * 2, nullptr, GL_MAP_READ_BIT | GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT);
1218 uint8_t *ptr = (uint8_t *)glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, frame_width * frame_height * 2, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT);
1219 gl_surfaces[i].y_offset = 0;
1220 gl_surfaces[i].cbcr_offset = frame_width * frame_height;
1221 gl_surfaces[i].y_ptr = ptr + gl_surfaces[i].y_offset;
1222 gl_surfaces[i].cbcr_ptr = ptr + gl_surfaces[i].cbcr_offset;
1223 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1227 for (i = 0; i < SURFACE_NUM; i++) {
1228 gl_surfaces[i].src_surface = src_surface[i];
1229 gl_surfaces[i].ref_surface = ref_surface[i];
1235 // Given a list like 1 9 3 0 2 8 4 and a pivot element 3, will produce
1238 template<class T, class C>
1239 static void sort_two(T *begin, T *end, const T &pivot, const C &less_than)
1241 T *middle = partition(begin, end, [&](const T &elem) { return less_than(elem, pivot); });
1242 sort(begin, middle, [&](const T &a, const T &b) { return less_than(b, a); });
1243 sort(middle, end, less_than);
1246 void H264EncoderImpl::update_ReferenceFrames(int frame_type)
1250 if (frame_type == FRAME_B)
1253 CurrentCurrPic.flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
1255 if (numShortTerm > num_ref_frames)
1256 numShortTerm = num_ref_frames;
1257 for (i=numShortTerm-1; i>0; i--)
1258 ReferenceFrames[i] = ReferenceFrames[i-1];
1259 ReferenceFrames[0] = CurrentCurrPic;
1261 current_frame_num++;
1262 if (current_frame_num > MaxFrameNum)
1263 current_frame_num = 0;
1267 int H264EncoderImpl::update_RefPicList(int frame_type)
1269 const auto descending_by_frame_idx = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1270 return a.frame_idx > b.frame_idx;
1272 const auto ascending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1273 return a.TopFieldOrderCnt < b.TopFieldOrderCnt;
1275 const auto descending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1276 return a.TopFieldOrderCnt > b.TopFieldOrderCnt;
1279 if (frame_type == FRAME_P) {
1280 memcpy(RefPicList0_P, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1281 sort(&RefPicList0_P[0], &RefPicList0_P[numShortTerm], descending_by_frame_idx);
1282 } else if (frame_type == FRAME_B) {
1283 memcpy(RefPicList0_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1284 sort_two(&RefPicList0_B[0], &RefPicList0_B[numShortTerm], CurrentCurrPic, ascending_by_top_field_order_cnt);
1286 memcpy(RefPicList1_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1287 sort_two(&RefPicList1_B[0], &RefPicList1_B[numShortTerm], CurrentCurrPic, descending_by_top_field_order_cnt);
1294 int H264EncoderImpl::render_sequence()
1296 VABufferID seq_param_buf, rc_param_buf, render_id[2];
1298 VAEncMiscParameterBuffer *misc_param;
1299 VAEncMiscParameterRateControl *misc_rate_ctrl;
1301 seq_param.level_idc = 41 /*SH_LEVEL_3*/;
1302 seq_param.picture_width_in_mbs = frame_width_mbaligned / 16;
1303 seq_param.picture_height_in_mbs = frame_height_mbaligned / 16;
1304 seq_param.bits_per_second = frame_bitrate;
1306 seq_param.intra_period = intra_period;
1307 seq_param.intra_idr_period = intra_idr_period;
1308 seq_param.ip_period = ip_period;
1310 seq_param.max_num_ref_frames = num_ref_frames;
1311 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1312 seq_param.time_scale = TIMEBASE * 2;
1313 seq_param.num_units_in_tick = 1; /* Tc = num_units_in_tick / scale */
1314 seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 = Log2MaxPicOrderCntLsb - 4;
1315 seq_param.seq_fields.bits.log2_max_frame_num_minus4 = Log2MaxFrameNum - 4;;
1316 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1317 seq_param.seq_fields.bits.chroma_format_idc = 1;
1318 seq_param.seq_fields.bits.direct_8x8_inference_flag = 1;
1320 if (frame_width != frame_width_mbaligned ||
1321 frame_height != frame_height_mbaligned) {
1322 seq_param.frame_cropping_flag = 1;
1323 seq_param.frame_crop_left_offset = 0;
1324 seq_param.frame_crop_right_offset = (frame_width_mbaligned - frame_width)/2;
1325 seq_param.frame_crop_top_offset = 0;
1326 seq_param.frame_crop_bottom_offset = (frame_height_mbaligned - frame_height)/2;
1329 va_status = vaCreateBuffer(va_dpy, context_id,
1330 VAEncSequenceParameterBufferType,
1331 sizeof(seq_param), 1, &seq_param, &seq_param_buf);
1332 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1334 va_status = vaCreateBuffer(va_dpy, context_id,
1335 VAEncMiscParameterBufferType,
1336 sizeof(VAEncMiscParameterBuffer) + sizeof(VAEncMiscParameterRateControl),
1337 1, NULL, &rc_param_buf);
1338 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1340 vaMapBuffer(va_dpy, rc_param_buf, (void **)&misc_param);
1341 misc_param->type = VAEncMiscParameterTypeRateControl;
1342 misc_rate_ctrl = (VAEncMiscParameterRateControl *)misc_param->data;
1343 memset(misc_rate_ctrl, 0, sizeof(*misc_rate_ctrl));
1344 misc_rate_ctrl->bits_per_second = frame_bitrate;
1345 misc_rate_ctrl->target_percentage = 66;
1346 misc_rate_ctrl->window_size = 1000;
1347 misc_rate_ctrl->initial_qp = initial_qp;
1348 misc_rate_ctrl->min_qp = minimal_qp;
1349 misc_rate_ctrl->basic_unit_size = 0;
1350 vaUnmapBuffer(va_dpy, rc_param_buf);
1352 render_id[0] = seq_param_buf;
1353 render_id[1] = rc_param_buf;
1355 render_picture_and_delete(va_dpy, context_id, &render_id[0], 2);
1360 static int calc_poc(int pic_order_cnt_lsb, int frame_type)
1362 static int PicOrderCntMsb_ref = 0, pic_order_cnt_lsb_ref = 0;
1363 int prevPicOrderCntMsb, prevPicOrderCntLsb;
1364 int PicOrderCntMsb, TopFieldOrderCnt;
1366 if (frame_type == FRAME_IDR)
1367 prevPicOrderCntMsb = prevPicOrderCntLsb = 0;
1369 prevPicOrderCntMsb = PicOrderCntMsb_ref;
1370 prevPicOrderCntLsb = pic_order_cnt_lsb_ref;
1373 if ((pic_order_cnt_lsb < prevPicOrderCntLsb) &&
1374 ((prevPicOrderCntLsb - pic_order_cnt_lsb) >= (int)(MaxPicOrderCntLsb / 2)))
1375 PicOrderCntMsb = prevPicOrderCntMsb + MaxPicOrderCntLsb;
1376 else if ((pic_order_cnt_lsb > prevPicOrderCntLsb) &&
1377 ((pic_order_cnt_lsb - prevPicOrderCntLsb) > (int)(MaxPicOrderCntLsb / 2)))
1378 PicOrderCntMsb = prevPicOrderCntMsb - MaxPicOrderCntLsb;
1380 PicOrderCntMsb = prevPicOrderCntMsb;
1382 TopFieldOrderCnt = PicOrderCntMsb + pic_order_cnt_lsb;
1384 if (frame_type != FRAME_B) {
1385 PicOrderCntMsb_ref = PicOrderCntMsb;
1386 pic_order_cnt_lsb_ref = pic_order_cnt_lsb;
1389 return TopFieldOrderCnt;
1392 int H264EncoderImpl::render_picture(int frame_type, int display_frame_num, int gop_start_display_frame_num)
1394 VABufferID pic_param_buf;
1398 pic_param.CurrPic.picture_id = gl_surfaces[display_frame_num % SURFACE_NUM].ref_surface;
1399 pic_param.CurrPic.frame_idx = current_frame_num;
1400 pic_param.CurrPic.flags = 0;
1401 pic_param.CurrPic.TopFieldOrderCnt = calc_poc((display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb, frame_type);
1402 pic_param.CurrPic.BottomFieldOrderCnt = pic_param.CurrPic.TopFieldOrderCnt;
1403 CurrentCurrPic = pic_param.CurrPic;
1405 memcpy(pic_param.ReferenceFrames, ReferenceFrames, numShortTerm*sizeof(VAPictureH264));
1406 for (i = numShortTerm; i < MAX_NUM_REF1; i++) {
1407 pic_param.ReferenceFrames[i].picture_id = VA_INVALID_SURFACE;
1408 pic_param.ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
1411 pic_param.pic_fields.bits.idr_pic_flag = (frame_type == FRAME_IDR);
1412 pic_param.pic_fields.bits.reference_pic_flag = (frame_type != FRAME_B);
1413 pic_param.pic_fields.bits.entropy_coding_mode_flag = h264_entropy_mode;
1414 pic_param.pic_fields.bits.deblocking_filter_control_present_flag = 1;
1415 pic_param.frame_num = current_frame_num;
1416 pic_param.coded_buf = gl_surfaces[display_frame_num % SURFACE_NUM].coded_buf;
1417 pic_param.last_picture = false; // FIXME
1418 pic_param.pic_init_qp = initial_qp;
1420 va_status = vaCreateBuffer(va_dpy, context_id, VAEncPictureParameterBufferType,
1421 sizeof(pic_param), 1, &pic_param, &pic_param_buf);
1422 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1424 render_picture_and_delete(va_dpy, context_id, &pic_param_buf, 1);
1429 int H264EncoderImpl::render_packedsequence()
1431 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1432 VABufferID packedseq_para_bufid, packedseq_data_bufid, render_id[2];
1433 unsigned int length_in_bits;
1434 unsigned char *packedseq_buffer = NULL;
1437 length_in_bits = build_packed_seq_buffer(&packedseq_buffer);
1439 packedheader_param_buffer.type = VAEncPackedHeaderSequence;
1441 packedheader_param_buffer.bit_length = length_in_bits; /*length_in_bits*/
1442 packedheader_param_buffer.has_emulation_bytes = 0;
1443 va_status = vaCreateBuffer(va_dpy,
1445 VAEncPackedHeaderParameterBufferType,
1446 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1447 &packedseq_para_bufid);
1448 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1450 va_status = vaCreateBuffer(va_dpy,
1452 VAEncPackedHeaderDataBufferType,
1453 (length_in_bits + 7) / 8, 1, packedseq_buffer,
1454 &packedseq_data_bufid);
1455 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1457 render_id[0] = packedseq_para_bufid;
1458 render_id[1] = packedseq_data_bufid;
1459 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1461 free(packedseq_buffer);
1467 int H264EncoderImpl::render_packedpicture()
1469 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1470 VABufferID packedpic_para_bufid, packedpic_data_bufid, render_id[2];
1471 unsigned int length_in_bits;
1472 unsigned char *packedpic_buffer = NULL;
1475 length_in_bits = build_packed_pic_buffer(&packedpic_buffer);
1476 packedheader_param_buffer.type = VAEncPackedHeaderPicture;
1477 packedheader_param_buffer.bit_length = length_in_bits;
1478 packedheader_param_buffer.has_emulation_bytes = 0;
1480 va_status = vaCreateBuffer(va_dpy,
1482 VAEncPackedHeaderParameterBufferType,
1483 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1484 &packedpic_para_bufid);
1485 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1487 va_status = vaCreateBuffer(va_dpy,
1489 VAEncPackedHeaderDataBufferType,
1490 (length_in_bits + 7) / 8, 1, packedpic_buffer,
1491 &packedpic_data_bufid);
1492 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1494 render_id[0] = packedpic_para_bufid;
1495 render_id[1] = packedpic_data_bufid;
1496 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1498 free(packedpic_buffer);
1503 void H264EncoderImpl::render_packedslice()
1505 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1506 VABufferID packedslice_para_bufid, packedslice_data_bufid, render_id[2];
1507 unsigned int length_in_bits;
1508 unsigned char *packedslice_buffer = NULL;
1511 length_in_bits = build_packed_slice_buffer(&packedslice_buffer);
1512 packedheader_param_buffer.type = VAEncPackedHeaderSlice;
1513 packedheader_param_buffer.bit_length = length_in_bits;
1514 packedheader_param_buffer.has_emulation_bytes = 0;
1516 va_status = vaCreateBuffer(va_dpy,
1518 VAEncPackedHeaderParameterBufferType,
1519 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1520 &packedslice_para_bufid);
1521 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1523 va_status = vaCreateBuffer(va_dpy,
1525 VAEncPackedHeaderDataBufferType,
1526 (length_in_bits + 7) / 8, 1, packedslice_buffer,
1527 &packedslice_data_bufid);
1528 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1530 render_id[0] = packedslice_para_bufid;
1531 render_id[1] = packedslice_data_bufid;
1532 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1534 free(packedslice_buffer);
1537 int H264EncoderImpl::render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type)
1539 VABufferID slice_param_buf;
1543 update_RefPicList(frame_type);
1545 /* one frame, one slice */
1546 slice_param.macroblock_address = 0;
1547 slice_param.num_macroblocks = frame_width_mbaligned * frame_height_mbaligned/(16*16); /* Measured by MB */
1548 slice_param.slice_type = (frame_type == FRAME_IDR)?2:frame_type;
1549 if (frame_type == FRAME_IDR) {
1550 if (encoding_frame_num != 0)
1551 ++slice_param.idr_pic_id;
1552 } else if (frame_type == FRAME_P) {
1553 int refpiclist0_max = h264_maxref & 0xffff;
1554 memcpy(slice_param.RefPicList0, RefPicList0_P, refpiclist0_max*sizeof(VAPictureH264));
1556 for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1557 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1558 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1560 } else if (frame_type == FRAME_B) {
1561 int refpiclist0_max = h264_maxref & 0xffff;
1562 int refpiclist1_max = (h264_maxref >> 16) & 0xffff;
1564 memcpy(slice_param.RefPicList0, RefPicList0_B, refpiclist0_max*sizeof(VAPictureH264));
1565 for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1566 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1567 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1570 memcpy(slice_param.RefPicList1, RefPicList1_B, refpiclist1_max*sizeof(VAPictureH264));
1571 for (i = refpiclist1_max; i < MAX_NUM_REF2; i++) {
1572 slice_param.RefPicList1[i].picture_id = VA_INVALID_SURFACE;
1573 slice_param.RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
1577 slice_param.slice_alpha_c0_offset_div2 = 0;
1578 slice_param.slice_beta_offset_div2 = 0;
1579 slice_param.direct_spatial_mv_pred_flag = 1;
1580 slice_param.pic_order_cnt_lsb = (display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb;
1583 if (h264_packedheader &&
1584 config_attrib[enc_packed_header_idx].value & VA_ENC_PACKED_HEADER_SLICE)
1585 render_packedslice();
1587 va_status = vaCreateBuffer(va_dpy, context_id, VAEncSliceParameterBufferType,
1588 sizeof(slice_param), 1, &slice_param, &slice_param_buf);
1589 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1591 render_picture_and_delete(va_dpy, context_id, &slice_param_buf, 1);
1598 void H264EncoderImpl::save_codeddata(storage_task task)
1600 VACodedBufferSegment *buf_list = NULL;
1605 va_status = vaMapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf, (void **)(&buf_list));
1606 CHECK_VASTATUS(va_status, "vaMapBuffer");
1607 while (buf_list != NULL) {
1608 data.append(reinterpret_cast<const char *>(buf_list->buf), buf_list->size);
1609 buf_list = (VACodedBufferSegment *) buf_list->next;
1611 vaUnmapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf);
1616 memset(&pkt, 0, sizeof(pkt));
1618 pkt.data = reinterpret_cast<uint8_t *>(&data[0]);
1619 pkt.size = data.size();
1620 pkt.stream_index = 0;
1621 if (task.frame_type == FRAME_IDR) {
1622 pkt.flags = AV_PKT_FLAG_KEY;
1628 file_mux->add_packet(pkt, task.pts + global_delay(), task.dts + global_delay());
1630 if (!global_flags.uncompressed_video_to_http) {
1631 httpd->add_packet(pkt, task.pts + global_delay(), task.dts + global_delay());
1634 // Encode and add all audio frames up to and including the pts of this video frame.
1637 vector<float> audio;
1639 unique_lock<mutex> lock(frame_queue_mutex);
1640 frame_queue_nonempty.wait(lock, [this]{ return storage_thread_should_quit || !pending_audio_frames.empty(); });
1641 if (storage_thread_should_quit && pending_audio_frames.empty()) return;
1642 auto it = pending_audio_frames.begin();
1643 if (it->first > task.pts) break;
1644 audio_pts = it->first;
1645 audio = move(it->second);
1646 pending_audio_frames.erase(it);
1649 encode_audio(audio, audio_pts, context_audio);
1651 if (audio_pts == task.pts) break;
1655 void H264EncoderImpl::encode_audio(
1656 const vector<float> &audio,
1658 AVCodecContext *ctx)
1660 audio_frame->nb_samples = audio.size() / 2;
1661 audio_frame->channel_layout = AV_CH_LAYOUT_STEREO;
1663 unique_ptr<float[]> planar_samples;
1664 unique_ptr<int32_t[]> int_samples;
1666 if (ctx->sample_fmt == AV_SAMPLE_FMT_FLTP) {
1667 audio_frame->format = AV_SAMPLE_FMT_FLTP;
1668 planar_samples.reset(new float[audio.size()]);
1669 avcodec_fill_audio_frame(audio_frame, 2, AV_SAMPLE_FMT_FLTP, (const uint8_t*)planar_samples.get(), audio.size() * sizeof(float), 0);
1670 for (int i = 0; i < audio_frame->nb_samples; ++i) {
1671 planar_samples[i] = audio[i * 2 + 0];
1672 planar_samples[i + audio_frame->nb_samples] = audio[i * 2 + 1];
1675 assert(ctx->sample_fmt == AV_SAMPLE_FMT_S32);
1676 int_samples.reset(new int32_t[audio.size()]);
1677 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);
1679 fprintf(stderr, "avcodec_fill_audio_frame() failed with %d\n", ret);
1682 for (int i = 0; i < audio_frame->nb_samples * 2; ++i) {
1683 if (audio[i] >= 1.0f) {
1684 int_samples[i] = 2147483647;
1685 } else if (audio[i] <= -1.0f) {
1686 int_samples[i] = -2147483647;
1688 int_samples[i] = lrintf(audio[i] * 2147483647.0f);
1694 av_init_packet(&pkt);
1698 avcodec_encode_audio2(context_audio, &pkt, audio_frame, &got_output);
1700 pkt.stream_index = 1;
1701 pkt.flags = AV_PKT_FLAG_KEY;
1703 file_mux->add_packet(pkt, audio_pts + global_delay(), audio_pts + global_delay());
1705 httpd->add_packet(pkt, audio_pts + global_delay(), audio_pts + global_delay());
1707 // TODO: Delayed frames.
1708 av_frame_unref(audio_frame);
1709 av_free_packet(&pkt);
1712 // this is weird. but it seems to put a new frame onto the queue
1713 void H264EncoderImpl::storage_task_enqueue(storage_task task)
1715 unique_lock<mutex> lock(storage_task_queue_mutex);
1716 storage_task_queue.push(move(task));
1717 storage_task_queue_changed.notify_all();
1720 void H264EncoderImpl::storage_task_thread()
1723 storage_task current;
1725 // wait until there's an encoded frame
1726 unique_lock<mutex> lock(storage_task_queue_mutex);
1727 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || !storage_task_queue.empty(); });
1728 if (storage_thread_should_quit && storage_task_queue.empty()) return;
1729 current = move(storage_task_queue.front());
1730 storage_task_queue.pop();
1735 // waits for data, then saves it to disk.
1736 va_status = vaSyncSurface(va_dpy, gl_surfaces[current.display_order % SURFACE_NUM].src_surface);
1737 CHECK_VASTATUS(va_status, "vaSyncSurface");
1738 save_codeddata(move(current));
1741 unique_lock<mutex> lock(storage_task_queue_mutex);
1742 srcsurface_status[current.display_order % SURFACE_NUM] = SRC_SURFACE_FREE;
1743 storage_task_queue_changed.notify_all();
1748 int H264EncoderImpl::release_encode()
1750 for (unsigned i = 0; i < SURFACE_NUM; i++) {
1751 vaDestroyBuffer(va_dpy, gl_surfaces[i].coded_buf);
1752 vaDestroySurfaces(va_dpy, &gl_surfaces[i].src_surface, 1);
1753 vaDestroySurfaces(va_dpy, &gl_surfaces[i].ref_surface, 1);
1755 if (!use_zerocopy) {
1756 glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1757 glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
1758 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1759 glDeleteBuffers(1, &gl_surfaces[i].pbo);
1761 glDeleteTextures(1, &gl_surfaces[i].y_tex);
1762 glDeleteTextures(1, &gl_surfaces[i].cbcr_tex);
1765 vaDestroyContext(va_dpy, context_id);
1766 vaDestroyConfig(va_dpy, config_id);
1771 int H264EncoderImpl::deinit_va()
1773 vaTerminate(va_dpy);
1775 va_close_display(va_dpy);
1782 void init_audio_encoder(const string &codec_name, int bit_rate, AVCodecContext **ctx)
1784 AVCodec *codec_audio = avcodec_find_encoder_by_name(codec_name.c_str());
1785 if (codec_audio == nullptr) {
1786 fprintf(stderr, "ERROR: Could not find codec '%s'\n", codec_name.c_str());
1790 AVCodecContext *context_audio = avcodec_alloc_context3(codec_audio);
1791 context_audio->bit_rate = bit_rate;
1792 context_audio->sample_rate = OUTPUT_FREQUENCY;
1794 // Choose sample format; we currently only support these two
1795 // (see encode_audio), so we're a bit picky.
1796 const AVSampleFormat *ptr = codec_audio->sample_fmts;
1797 for ( ; *ptr != -1; ++ptr) {
1798 if (*ptr == AV_SAMPLE_FMT_FLTP || *ptr == AV_SAMPLE_FMT_S32) {
1799 context_audio->sample_fmt = *ptr;
1804 fprintf(stderr, "ERROR: Audio codec does not support fltp or s32 sample formats\n");
1808 context_audio->channels = 2;
1809 context_audio->channel_layout = AV_CH_LAYOUT_STEREO;
1810 context_audio->time_base = AVRational{1, TIMEBASE};
1811 if (avcodec_open2(context_audio, codec_audio, NULL) < 0) {
1812 fprintf(stderr, "Could not open codec '%s'\n", codec_name.c_str());
1816 *ctx = context_audio;
1821 H264EncoderImpl::H264EncoderImpl(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd)
1822 : current_storage_frame(0), surface(surface), httpd(httpd)
1824 init_audio_encoder(AUDIO_OUTPUT_CODEC_NAME, AUDIO_OUTPUT_BIT_RATE, &context_audio);
1826 audio_frame = av_frame_alloc();
1828 frame_width = width;
1829 frame_height = height;
1830 frame_width_mbaligned = (frame_width + 15) & (~15);
1831 frame_height_mbaligned = (frame_height + 15) & (~15);
1835 if (global_flags.uncompressed_video_to_http) {
1836 reorderer.reset(new FrameReorderer(ip_period - 1, frame_width, frame_height));
1839 init_va(va_display);
1842 // No frames are ready yet.
1843 memset(srcsurface_status, SRC_SURFACE_FREE, sizeof(srcsurface_status));
1845 memset(&seq_param, 0, sizeof(seq_param));
1846 memset(&pic_param, 0, sizeof(pic_param));
1847 memset(&slice_param, 0, sizeof(slice_param));
1849 storage_thread = thread(&H264EncoderImpl::storage_task_thread, this);
1851 encode_thread = thread([this]{
1852 //SDL_GL_MakeCurrent(window, context);
1853 QOpenGLContext *context = create_context(this->surface);
1854 eglBindAPI(EGL_OPENGL_API);
1855 if (!make_current(context, this->surface)) {
1856 printf("display=%p surface=%p context=%p curr=%p err=%d\n", eglGetCurrentDisplay(), this->surface, context, eglGetCurrentContext(),
1860 encode_thread_func();
1864 H264EncoderImpl::~H264EncoderImpl()
1867 av_frame_free(&audio_frame);
1869 // TODO: Destroy context.
1872 bool H264EncoderImpl::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
1874 assert(!is_shutdown);
1876 // Wait until this frame slot is done encoding.
1877 unique_lock<mutex> lock(storage_task_queue_mutex);
1878 if (srcsurface_status[current_storage_frame % SURFACE_NUM] != SRC_SURFACE_FREE) {
1879 fprintf(stderr, "Warning: Slot %d (for frame %d) is still encoding, rendering has to wait for H.264 encoder\n",
1880 current_storage_frame % SURFACE_NUM, current_storage_frame);
1882 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || (srcsurface_status[current_storage_frame % SURFACE_NUM] == SRC_SURFACE_FREE); });
1883 srcsurface_status[current_storage_frame % SURFACE_NUM] = SRC_SURFACE_IN_ENCODING;
1884 if (storage_thread_should_quit) return false;
1887 //*fbo = fbos[current_storage_frame % SURFACE_NUM];
1888 GLSurface *surf = &gl_surfaces[current_storage_frame % SURFACE_NUM];
1889 *y_tex = surf->y_tex;
1890 *cbcr_tex = surf->cbcr_tex;
1892 VAStatus va_status = vaDeriveImage(va_dpy, surf->src_surface, &surf->surface_image);
1893 CHECK_VASTATUS(va_status, "vaDeriveImage");
1896 VABufferInfo buf_info;
1897 buf_info.mem_type = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME; // or VA_SURFACE_ATTRIB_MEM_TYPE_KERNEL_DRM?
1898 va_status = vaAcquireBufferHandle(va_dpy, surf->surface_image.buf, &buf_info);
1899 CHECK_VASTATUS(va_status, "vaAcquireBufferHandle");
1902 surf->y_egl_image = EGL_NO_IMAGE_KHR;
1903 EGLint y_attribs[] = {
1904 EGL_WIDTH, frame_width,
1905 EGL_HEIGHT, frame_height,
1906 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('R', '8', ' ', ' '),
1907 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1908 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[0]),
1909 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[0]),
1913 surf->y_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, y_attribs);
1914 assert(surf->y_egl_image != EGL_NO_IMAGE_KHR);
1916 // Associate Y image to a texture.
1917 glBindTexture(GL_TEXTURE_2D, *y_tex);
1918 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->y_egl_image);
1920 // Create CbCr image.
1921 surf->cbcr_egl_image = EGL_NO_IMAGE_KHR;
1922 EGLint cbcr_attribs[] = {
1923 EGL_WIDTH, frame_width,
1924 EGL_HEIGHT, frame_height,
1925 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('G', 'R', '8', '8'),
1926 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
1927 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[1]),
1928 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[1]),
1932 surf->cbcr_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, cbcr_attribs);
1933 assert(surf->cbcr_egl_image != EGL_NO_IMAGE_KHR);
1935 // Associate CbCr image to a texture.
1936 glBindTexture(GL_TEXTURE_2D, *cbcr_tex);
1937 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->cbcr_egl_image);
1943 void H264EncoderImpl::add_audio(int64_t pts, vector<float> audio)
1945 assert(!is_shutdown);
1947 unique_lock<mutex> lock(frame_queue_mutex);
1948 pending_audio_frames[pts] = move(audio);
1950 frame_queue_nonempty.notify_all();
1953 RefCountedGLsync H264EncoderImpl::end_frame(int64_t pts, const vector<RefCountedFrame> &input_frames)
1955 assert(!is_shutdown);
1957 if (!use_zerocopy) {
1958 GLSurface *surf = &gl_surfaces[current_storage_frame % SURFACE_NUM];
1960 glPixelStorei(GL_PACK_ROW_LENGTH, 0);
1963 glBindBuffer(GL_PIXEL_PACK_BUFFER, surf->pbo);
1966 glBindTexture(GL_TEXTURE_2D, surf->y_tex);
1968 glGetTexImage(GL_TEXTURE_2D, 0, GL_RED, GL_UNSIGNED_BYTE, BUFFER_OFFSET(surf->y_offset));
1971 glBindTexture(GL_TEXTURE_2D, surf->cbcr_tex);
1973 glGetTexImage(GL_TEXTURE_2D, 0, GL_RG, GL_UNSIGNED_BYTE, BUFFER_OFFSET(surf->cbcr_offset));
1976 glBindTexture(GL_TEXTURE_2D, 0);
1978 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1981 glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT | GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
1985 RefCountedGLsync fence = RefCountedGLsync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
1987 glFlush(); // Make the H.264 thread see the fence as soon as possible.
1991 unique_lock<mutex> lock(frame_queue_mutex);
1992 pending_video_frames[current_storage_frame] = PendingFrame{ fence, input_frames, pts };
1993 ++current_storage_frame;
1995 frame_queue_nonempty.notify_all();
1999 void H264EncoderImpl::shutdown()
2006 unique_lock<mutex> lock(frame_queue_mutex);
2007 encode_thread_should_quit = true;
2008 frame_queue_nonempty.notify_all();
2010 encode_thread.join();
2012 unique_lock<mutex> lock(storage_task_queue_mutex);
2013 storage_thread_should_quit = true;
2014 frame_queue_nonempty.notify_all();
2015 storage_task_queue_changed.notify_all();
2017 storage_thread.join();
2024 void H264EncoderImpl::open_output_file(const std::string &filename)
2026 AVFormatContext *avctx = avformat_alloc_context();
2027 avctx->oformat = av_guess_format(NULL, filename.c_str(), NULL);
2028 assert(filename.size() < sizeof(avctx->filename) - 1);
2029 strcpy(avctx->filename, filename.c_str());
2031 string url = "file:" + filename;
2032 int ret = avio_open2(&avctx->pb, url.c_str(), AVIO_FLAG_WRITE, &avctx->interrupt_callback, NULL);
2034 char tmp[AV_ERROR_MAX_STRING_SIZE];
2035 fprintf(stderr, "%s: avio_open2() failed: %s\n", filename.c_str(), av_make_error_string(tmp, sizeof(tmp), ret));
2039 file_mux.reset(new Mux(avctx, frame_width, frame_height, Mux::CODEC_H264, TIMEBASE));
2042 void H264EncoderImpl::close_output_file()
2047 void H264EncoderImpl::encode_thread_func()
2049 int64_t last_dts = -1;
2050 int gop_start_display_frame_num = 0;
2051 for (int encoding_frame_num = 0; ; ++encoding_frame_num) {
2054 int frame_type, display_frame_num;
2055 encoding2display_order(encoding_frame_num, intra_period, intra_idr_period, ip_period,
2056 &display_frame_num, &frame_type, &pts_lag);
2057 if (frame_type == FRAME_IDR) {
2059 current_frame_num = 0;
2060 gop_start_display_frame_num = display_frame_num;
2064 unique_lock<mutex> lock(frame_queue_mutex);
2065 frame_queue_nonempty.wait(lock, [this, display_frame_num]{
2066 return encode_thread_should_quit || pending_video_frames.count(display_frame_num) != 0;
2068 if (encode_thread_should_quit && pending_video_frames.count(display_frame_num) == 0) {
2069 // We have queued frames that were supposed to be B-frames,
2070 // but will be no P-frame to encode them against. Encode them all
2071 // as P-frames instead. Note that this happens under the mutex,
2072 // but nobody else uses it at this point, since we're shutting down,
2073 // so there's no contention.
2074 encode_remaining_frames_as_p(encoding_frame_num, gop_start_display_frame_num, last_dts);
2077 frame = move(pending_video_frames[display_frame_num]);
2078 pending_video_frames.erase(display_frame_num);
2082 // Determine the dts of this frame.
2084 if (pts_lag == -1) {
2085 assert(last_dts != -1);
2086 dts = last_dts + (TIMEBASE / MAX_FPS);
2088 dts = frame.pts - pts_lag;
2092 encode_frame(frame, encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type, frame.pts, dts);
2096 void H264EncoderImpl::encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts)
2098 if (pending_video_frames.empty()) {
2102 for (auto &pending_frame : pending_video_frames) {
2103 int display_frame_num = pending_frame.first;
2104 assert(display_frame_num > 0);
2105 PendingFrame frame = move(pending_frame.second);
2106 int64_t dts = last_dts + (TIMEBASE / MAX_FPS);
2107 printf("Finalizing encode: Encoding leftover frame %d as P-frame instead of B-frame.\n", display_frame_num);
2108 encode_frame(frame, encoding_frame_num++, display_frame_num, gop_start_display_frame_num, FRAME_P, frame.pts, dts);
2112 if (global_flags.uncompressed_video_to_http) {
2113 // Add frames left in reorderer.
2114 while (!reorderer->empty()) {
2115 pair<int64_t, const uint8_t *> output_frame = reorderer->get_first_frame();
2116 add_packet_for_uncompressed_frame(output_frame.first, output_frame.second);
2121 void H264EncoderImpl::add_packet_for_uncompressed_frame(int64_t pts, const uint8_t *data)
2124 memset(&pkt, 0, sizeof(pkt));
2126 pkt.data = const_cast<uint8_t *>(data);
2127 pkt.size = frame_width * frame_height * 2;
2128 pkt.stream_index = 0;
2129 pkt.flags = AV_PKT_FLAG_KEY;
2130 httpd->add_packet(pkt, pts, pts);
2135 void memcpy_with_pitch(uint8_t *dst, const uint8_t *src, size_t src_width, size_t dst_pitch, size_t height)
2137 if (src_width == dst_pitch) {
2138 memcpy(dst, src, src_width * height);
2140 for (size_t y = 0; y < height; ++y) {
2141 const uint8_t *sptr = src + y * src_width;
2142 uint8_t *dptr = dst + y * dst_pitch;
2143 memcpy(dptr, sptr, src_width);
2150 void H264EncoderImpl::encode_frame(H264EncoderImpl::PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
2151 int frame_type, int64_t pts, int64_t dts)
2153 // Wait for the GPU to be done with the frame.
2156 sync_status = glClientWaitSync(frame.fence.get(), 0, 1000000000);
2158 } while (sync_status == GL_TIMEOUT_EXPIRED);
2159 assert(sync_status != GL_WAIT_FAILED);
2161 // Release back any input frames we needed to render this frame.
2162 frame.input_frames.clear();
2164 GLSurface *surf = &gl_surfaces[display_frame_num % SURFACE_NUM];
2168 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->y_egl_image);
2169 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->cbcr_egl_image);
2170 va_status = vaReleaseBufferHandle(va_dpy, surf->surface_image.buf);
2171 CHECK_VASTATUS(va_status, "vaReleaseBufferHandle");
2173 unsigned char *surface_p = nullptr;
2174 vaMapBuffer(va_dpy, surf->surface_image.buf, (void **)&surface_p);
2176 unsigned char *va_y_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[0];
2177 memcpy_with_pitch(va_y_ptr, surf->y_ptr, frame_width, surf->surface_image.pitches[0], frame_height);
2179 unsigned char *va_cbcr_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[1];
2180 memcpy_with_pitch(va_cbcr_ptr, surf->cbcr_ptr, (frame_width / 2) * sizeof(uint16_t), surf->surface_image.pitches[1], frame_height / 2);
2182 va_status = vaUnmapBuffer(va_dpy, surf->surface_image.buf);
2183 CHECK_VASTATUS(va_status, "vaUnmapBuffer");
2185 if (global_flags.uncompressed_video_to_http) {
2186 // Add uncompressed video. (Note that pts == dts here.)
2187 // Delay needs to match audio.
2188 pair<int64_t, const uint8_t *> output_frame = reorderer->reorder_frame(pts + global_delay(), reinterpret_cast<uint8_t *>(surf->y_ptr));
2189 if (output_frame.second != nullptr) {
2190 add_packet_for_uncompressed_frame(output_frame.first, output_frame.second);
2195 va_status = vaDestroyImage(va_dpy, surf->surface_image.image_id);
2196 CHECK_VASTATUS(va_status, "vaDestroyImage");
2198 // Schedule the frame for encoding.
2199 VASurfaceID va_surface = surf->src_surface;
2200 va_status = vaBeginPicture(va_dpy, context_id, va_surface);
2201 CHECK_VASTATUS(va_status, "vaBeginPicture");
2203 if (frame_type == FRAME_IDR) {
2205 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
2206 if (h264_packedheader) {
2207 render_packedsequence();
2208 render_packedpicture();
2211 //render_sequence();
2212 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
2214 render_slice(encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type);
2216 va_status = vaEndPicture(va_dpy, context_id);
2217 CHECK_VASTATUS(va_status, "vaEndPicture");
2219 // so now the data is done encoding (well, async job kicked off)...
2220 // we send that to the storage thread
2222 tmp.display_order = display_frame_num;
2223 tmp.frame_type = frame_type;
2226 storage_task_enqueue(move(tmp));
2228 update_ReferenceFrames(frame_type);
2232 H264Encoder::H264Encoder(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd)
2233 : impl(new H264EncoderImpl(surface, va_display, width, height, httpd)) {}
2235 // Must be defined here because unique_ptr<> destructor needs to know the impl.
2236 H264Encoder::~H264Encoder() {}
2238 void H264Encoder::add_audio(int64_t pts, vector<float> audio)
2240 impl->add_audio(pts, audio);
2243 bool H264Encoder::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
2245 return impl->begin_frame(y_tex, cbcr_tex);
2248 RefCountedGLsync H264Encoder::end_frame(int64_t pts, const vector<RefCountedFrame> &input_frames)
2250 return impl->end_frame(pts, input_frames);
2253 void H264Encoder::shutdown()
2258 void H264Encoder::open_output_file(const std::string &filename)
2260 impl->open_output_file(filename);
2263 void H264Encoder::close_output_file()
2265 impl->close_output_file();