2 #include "quicksync_encoder.h"
4 #include <movit/util.h>
5 #include <EGL/eglplatform.h>
11 #include <libavcodec/avcodec.h>
12 #include <libavformat/avformat.h>
13 #include <libavresample/avresample.h>
14 #include <libavutil/channel_layout.h>
15 #include <libavutil/frame.h>
16 #include <libavutil/rational.h>
17 #include <libavutil/samplefmt.h>
18 #include <libavutil/opt.h>
20 #include <libdrm/drm_fourcc.h>
26 #include <va/va_drm.h>
27 #include <va/va_drmcommon.h>
28 #include <va/va_enc_h264.h>
29 #include <va/va_x11.h>
31 #include <condition_variable>
46 #include "x264_encoder.h"
53 #define CHECK_VASTATUS(va_status, func) \
54 if (va_status != VA_STATUS_SUCCESS) { \
55 fprintf(stderr, "%s:%d (%s) failed with %d\n", __func__, __LINE__, func, va_status); \
59 #define BUFFER_OFFSET(i) ((char *)NULL + (i))
61 //#include "loadsurface.h"
63 #define NAL_REF_IDC_NONE 0
64 #define NAL_REF_IDC_LOW 1
65 #define NAL_REF_IDC_MEDIUM 2
66 #define NAL_REF_IDC_HIGH 3
74 #define SLICE_TYPE_P 0
75 #define SLICE_TYPE_B 1
76 #define SLICE_TYPE_I 2
77 #define IS_P_SLICE(type) (SLICE_TYPE_P == (type))
78 #define IS_B_SLICE(type) (SLICE_TYPE_B == (type))
79 #define IS_I_SLICE(type) (SLICE_TYPE_I == (type))
82 #define ENTROPY_MODE_CAVLC 0
83 #define ENTROPY_MODE_CABAC 1
85 #define PROFILE_IDC_BASELINE 66
86 #define PROFILE_IDC_MAIN 77
87 #define PROFILE_IDC_HIGH 100
89 #define BITSTREAM_ALLOCATE_STEPPING 4096
90 #define SURFACE_NUM 16 /* 16 surfaces for source YUV */
91 #define MAX_NUM_REF1 16 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
92 #define MAX_NUM_REF2 32 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
94 static constexpr unsigned int MaxFrameNum = (2<<16);
95 static constexpr unsigned int MaxPicOrderCntLsb = (2<<8);
96 static constexpr unsigned int Log2MaxFrameNum = 16;
97 static constexpr unsigned int Log2MaxPicOrderCntLsb = 8;
98 static constexpr int rc_default_modes[] = { // Priority list of modes.
101 VA_RC_VBR_CONSTRAINED,
107 /* thread to save coded data */
108 #define SRC_SURFACE_FREE 0
109 #define SRC_SURFACE_IN_ENCODING 1
112 unsigned int *buffer;
114 int max_size_in_dword;
116 typedef struct __bitstream bitstream;
120 // H.264 video comes out in encoding order (e.g. with two B-frames:
121 // 0, 3, 1, 2, 6, 4, 5, etc.), but uncompressed video needs to
122 // come in the right order. Since we do everything, including waiting
123 // for the frames to come out of OpenGL, in encoding order, we need
124 // a reordering buffer for uncompressed frames so that they come out
125 // correctly. We go the super-lazy way of not making it understand
126 // anything about the true order (which introduces some extra latency,
127 // though); we know that for N B-frames we need at most (N-1) frames
128 // in the reorder buffer, and can just sort on that.
130 // The class also deals with keeping a freelist as needed.
131 class FrameReorderer {
133 FrameReorderer(unsigned queue_length, int width, int height);
136 int64_t pts, duration;
139 // Invert to get the smallest pts first.
140 bool operator< (const Frame &other) const { return pts > other.pts; }
143 // Returns the next frame to insert with its pts, if any. Otherwise -1 and nullptr.
144 // Does _not_ take ownership of data; a copy is taken if needed.
145 // The returned pointer is valid until the next call to reorder_frame, or destruction.
146 // As a special case, if queue_length == 0, will just return pts and data (no reordering needed).
147 Frame reorder_frame(int64_t pts, int64_t duration, uint8_t *data);
149 // The same as reorder_frame, but without inserting anything. Used to empty the queue.
150 Frame get_first_frame();
152 bool empty() const { return frames.empty(); }
155 unsigned queue_length;
158 priority_queue<Frame> frames;
159 stack<uint8_t *> freelist; // Includes the last value returned from reorder_frame.
161 // Owns all the pointers. Normally, freelist and frames could do this themselves,
162 // except priority_queue doesn't work well with movable-only types.
163 vector<unique_ptr<uint8_t[]>> owner;
166 FrameReorderer::FrameReorderer(unsigned queue_length, int width, int height)
167 : queue_length(queue_length), width(width), height(height)
169 for (unsigned i = 0; i < queue_length; ++i) {
170 owner.emplace_back(new uint8_t[width * height * 2]);
171 freelist.push(owner.back().get());
175 FrameReorderer::Frame FrameReorderer::reorder_frame(int64_t pts, int64_t duration, uint8_t *data)
177 if (queue_length == 0) {
178 return Frame{pts, duration, data};
181 assert(!freelist.empty());
182 uint8_t *storage = freelist.top();
184 memcpy(storage, data, width * height * 2);
185 frames.push(Frame{pts, duration, storage});
187 if (frames.size() >= queue_length) {
188 return get_first_frame();
190 return Frame{-1, -1, nullptr};
194 FrameReorderer::Frame FrameReorderer::get_first_frame()
196 assert(!frames.empty());
197 Frame storage = frames.top();
199 freelist.push(storage.data);
203 class QuickSyncEncoderImpl {
205 QuickSyncEncoderImpl(QSurface *surface, const string &va_display, int width, int height, Mux *stream_mux);
206 ~QuickSyncEncoderImpl();
207 void add_audio(int64_t pts, vector<float> audio);
208 bool begin_frame(GLuint *y_tex, GLuint *cbcr_tex);
209 RefCountedGLsync end_frame(int64_t pts, int64_t duration, const vector<RefCountedFrame> &input_frames);
211 void open_output_file(const std::string &filename);
212 void close_output_file();
215 struct storage_task {
216 unsigned long long display_order;
219 int64_t pts, dts, duration;
221 struct PendingFrame {
222 RefCountedGLsync fence;
223 vector<RefCountedFrame> input_frames;
224 int64_t pts, duration;
227 // So we never get negative dts.
228 int64_t global_delay() const {
229 return int64_t(ip_period - 1) * (TIMEBASE / MAX_FPS);
232 void encode_thread_func();
233 void encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts);
234 void add_packet_for_uncompressed_frame(int64_t pts, int64_t duration, const uint8_t *data);
235 void encode_frame(PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
236 int frame_type, int64_t pts, int64_t dts, int64_t duration);
237 void storage_task_thread();
238 void encode_audio(const vector<float> &audio,
239 vector<float> *audio_queue,
242 AVAudioResampleContext *resampler,
243 const vector<Mux *> &muxes);
244 void encode_audio_one_frame(const float *audio,
245 size_t num_samples, // In each channel.
248 AVAudioResampleContext *resampler,
249 const vector<Mux *> &muxes);
250 void encode_last_audio(vector<float> *audio_queue,
253 AVAudioResampleContext *resampler,
254 const vector<Mux *> &muxes);
255 void encode_remaining_audio();
256 void storage_task_enqueue(storage_task task);
257 void save_codeddata(storage_task task);
258 int render_packedsequence();
259 int render_packedpicture();
260 void render_packedslice();
261 int render_sequence();
262 int render_picture(int frame_type, int display_frame_num, int gop_start_display_frame_num);
263 void sps_rbsp(bitstream *bs);
264 void pps_rbsp(bitstream *bs);
265 int build_packed_pic_buffer(unsigned char **header_buffer);
266 int render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type);
267 void slice_header(bitstream *bs);
268 int build_packed_seq_buffer(unsigned char **header_buffer);
269 int build_packed_slice_buffer(unsigned char **header_buffer);
270 int init_va(const string &va_display);
272 void enable_zerocopy_if_possible();
273 VADisplay va_open_display(const string &va_display);
274 void va_close_display(VADisplay va_dpy);
276 int release_encode();
277 void update_ReferenceFrames(int frame_type);
278 int update_RefPicList(int frame_type);
280 bool is_shutdown = false;
284 thread encode_thread, storage_thread;
286 mutex storage_task_queue_mutex;
287 condition_variable storage_task_queue_changed;
288 int srcsurface_status[SURFACE_NUM]; // protected by storage_task_queue_mutex
289 queue<storage_task> storage_task_queue; // protected by storage_task_queue_mutex
290 bool storage_thread_should_quit = false; // protected by storage_task_queue_mutex
292 mutex frame_queue_mutex;
293 condition_variable frame_queue_nonempty;
294 bool encode_thread_should_quit = false; // under frame_queue_mutex
296 int current_storage_frame;
298 map<int, PendingFrame> pending_video_frames; // under frame_queue_mutex
299 map<int64_t, vector<float>> pending_audio_frames; // under frame_queue_mutex
300 int64_t last_audio_pts = 0; // The first pts after all audio we've encoded.
303 AVCodecContext *context_audio_file;
304 AVCodecContext *context_audio_stream = nullptr; // nullptr = don't code separate audio for stream.
306 AVAudioResampleContext *resampler_audio_file = nullptr;
307 AVAudioResampleContext *resampler_audio_stream = nullptr;
309 vector<float> audio_queue_file;
310 vector<float> audio_queue_stream;
312 Mux* stream_mux; // To HTTP.
313 unique_ptr<Mux> file_mux; // To local disk.
315 AVFrame *audio_frame = nullptr;
316 unique_ptr<FrameReorderer> reorderer;
317 unique_ptr<X264Encoder> x264_encoder; // nullptr if not using x264.
319 Display *x11_display = nullptr;
321 // Encoder parameters
323 VAProfile h264_profile = (VAProfile)~0;
324 VAConfigAttrib config_attrib[VAConfigAttribTypeMax];
325 int config_attrib_num = 0, enc_packed_header_idx;
328 VASurfaceID src_surface, ref_surface;
329 VABufferID coded_buf;
331 VAImage surface_image;
332 GLuint y_tex, cbcr_tex;
334 // Only if use_zerocopy == true.
335 EGLImage y_egl_image, cbcr_egl_image;
337 // Only if use_zerocopy == false.
339 uint8_t *y_ptr, *cbcr_ptr;
340 size_t y_offset, cbcr_offset;
342 GLSurface gl_surfaces[SURFACE_NUM];
344 VAConfigID config_id;
345 VAContextID context_id;
346 VAEncSequenceParameterBufferH264 seq_param;
347 VAEncPictureParameterBufferH264 pic_param;
348 VAEncSliceParameterBufferH264 slice_param;
349 VAPictureH264 CurrentCurrPic;
350 VAPictureH264 ReferenceFrames[MAX_NUM_REF1], RefPicList0_P[MAX_NUM_REF2], RefPicList0_B[MAX_NUM_REF2], RefPicList1_B[MAX_NUM_REF2];
352 // Static quality settings.
353 static constexpr unsigned int frame_bitrate = 15000000 / 60; // Doesn't really matter; only initial_qp does.
354 static constexpr unsigned int num_ref_frames = 2;
355 static constexpr int initial_qp = 15;
356 static constexpr int minimal_qp = 0;
357 static constexpr int intra_period = 30;
358 static constexpr int intra_idr_period = MAX_FPS; // About a second; more at lower frame rates. Not ideal.
360 // Quality settings that are meant to be static, but might be overridden
362 int constraint_set_flag = 0;
363 int h264_packedheader = 0; /* support pack header? */
364 int h264_maxref = (1<<16|1);
365 int h264_entropy_mode = 1; /* cabac */
369 unsigned int current_frame_num = 0;
370 unsigned int numShortTerm = 0;
374 int frame_width_mbaligned;
375 int frame_height_mbaligned;
378 // Supposedly vaRenderPicture() is supposed to destroy the buffer implicitly,
379 // but if we don't delete it here, we get leaks. The GStreamer implementation
381 static void render_picture_and_delete(VADisplay dpy, VAContextID context, VABufferID *buffers, int num_buffers)
383 VAStatus va_status = vaRenderPicture(dpy, context, buffers, num_buffers);
384 CHECK_VASTATUS(va_status, "vaRenderPicture");
386 for (int i = 0; i < num_buffers; ++i) {
387 va_status = vaDestroyBuffer(dpy, buffers[i]);
388 CHECK_VASTATUS(va_status, "vaDestroyBuffer");
393 va_swap32(unsigned int val)
395 unsigned char *pval = (unsigned char *)&val;
397 return ((pval[0] << 24) |
404 bitstream_start(bitstream *bs)
406 bs->max_size_in_dword = BITSTREAM_ALLOCATE_STEPPING;
407 bs->buffer = (unsigned int *)calloc(bs->max_size_in_dword * sizeof(int), 1);
412 bitstream_end(bitstream *bs)
414 int pos = (bs->bit_offset >> 5);
415 int bit_offset = (bs->bit_offset & 0x1f);
416 int bit_left = 32 - bit_offset;
419 bs->buffer[pos] = va_swap32((bs->buffer[pos] << bit_left));
424 bitstream_put_ui(bitstream *bs, unsigned int val, int size_in_bits)
426 int pos = (bs->bit_offset >> 5);
427 int bit_offset = (bs->bit_offset & 0x1f);
428 int bit_left = 32 - bit_offset;
433 bs->bit_offset += size_in_bits;
435 if (bit_left > size_in_bits) {
436 bs->buffer[pos] = (bs->buffer[pos] << size_in_bits | val);
438 size_in_bits -= bit_left;
439 if (bit_left >= 32) {
440 bs->buffer[pos] = (val >> size_in_bits);
442 bs->buffer[pos] = (bs->buffer[pos] << bit_left) | (val >> size_in_bits);
444 bs->buffer[pos] = va_swap32(bs->buffer[pos]);
446 if (pos + 1 == bs->max_size_in_dword) {
447 bs->max_size_in_dword += BITSTREAM_ALLOCATE_STEPPING;
448 bs->buffer = (unsigned int *)realloc(bs->buffer, bs->max_size_in_dword * sizeof(unsigned int));
451 bs->buffer[pos + 1] = val;
456 bitstream_put_ue(bitstream *bs, unsigned int val)
458 int size_in_bits = 0;
466 bitstream_put_ui(bs, 0, size_in_bits - 1); // leading zero
467 bitstream_put_ui(bs, val, size_in_bits);
471 bitstream_put_se(bitstream *bs, int val)
473 unsigned int new_val;
478 new_val = 2 * val - 1;
480 bitstream_put_ue(bs, new_val);
484 bitstream_byte_aligning(bitstream *bs, int bit)
486 int bit_offset = (bs->bit_offset & 0x7);
487 int bit_left = 8 - bit_offset;
493 assert(bit == 0 || bit == 1);
496 new_val = (1 << bit_left) - 1;
500 bitstream_put_ui(bs, new_val, bit_left);
504 rbsp_trailing_bits(bitstream *bs)
506 bitstream_put_ui(bs, 1, 1);
507 bitstream_byte_aligning(bs, 0);
510 static void nal_start_code_prefix(bitstream *bs)
512 bitstream_put_ui(bs, 0x00000001, 32);
515 static void nal_header(bitstream *bs, int nal_ref_idc, int nal_unit_type)
517 bitstream_put_ui(bs, 0, 1); /* forbidden_zero_bit: 0 */
518 bitstream_put_ui(bs, nal_ref_idc, 2);
519 bitstream_put_ui(bs, nal_unit_type, 5);
522 void QuickSyncEncoderImpl::sps_rbsp(bitstream *bs)
524 int profile_idc = PROFILE_IDC_BASELINE;
526 if (h264_profile == VAProfileH264High)
527 profile_idc = PROFILE_IDC_HIGH;
528 else if (h264_profile == VAProfileH264Main)
529 profile_idc = PROFILE_IDC_MAIN;
531 bitstream_put_ui(bs, profile_idc, 8); /* profile_idc */
532 bitstream_put_ui(bs, !!(constraint_set_flag & 1), 1); /* constraint_set0_flag */
533 bitstream_put_ui(bs, !!(constraint_set_flag & 2), 1); /* constraint_set1_flag */
534 bitstream_put_ui(bs, !!(constraint_set_flag & 4), 1); /* constraint_set2_flag */
535 bitstream_put_ui(bs, !!(constraint_set_flag & 8), 1); /* constraint_set3_flag */
536 bitstream_put_ui(bs, 0, 4); /* reserved_zero_4bits */
537 bitstream_put_ui(bs, seq_param.level_idc, 8); /* level_idc */
538 bitstream_put_ue(bs, seq_param.seq_parameter_set_id); /* seq_parameter_set_id */
540 if ( profile_idc == PROFILE_IDC_HIGH) {
541 bitstream_put_ue(bs, 1); /* chroma_format_idc = 1, 4:2:0 */
542 bitstream_put_ue(bs, 0); /* bit_depth_luma_minus8 */
543 bitstream_put_ue(bs, 0); /* bit_depth_chroma_minus8 */
544 bitstream_put_ui(bs, 0, 1); /* qpprime_y_zero_transform_bypass_flag */
545 bitstream_put_ui(bs, 0, 1); /* seq_scaling_matrix_present_flag */
548 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_frame_num_minus4); /* log2_max_frame_num_minus4 */
549 bitstream_put_ue(bs, seq_param.seq_fields.bits.pic_order_cnt_type); /* pic_order_cnt_type */
551 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0)
552 bitstream_put_ue(bs, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4); /* log2_max_pic_order_cnt_lsb_minus4 */
557 bitstream_put_ue(bs, seq_param.max_num_ref_frames); /* num_ref_frames */
558 bitstream_put_ui(bs, 0, 1); /* gaps_in_frame_num_value_allowed_flag */
560 bitstream_put_ue(bs, seq_param.picture_width_in_mbs - 1); /* pic_width_in_mbs_minus1 */
561 bitstream_put_ue(bs, seq_param.picture_height_in_mbs - 1); /* pic_height_in_map_units_minus1 */
562 bitstream_put_ui(bs, seq_param.seq_fields.bits.frame_mbs_only_flag, 1); /* frame_mbs_only_flag */
564 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
568 bitstream_put_ui(bs, seq_param.seq_fields.bits.direct_8x8_inference_flag, 1); /* direct_8x8_inference_flag */
569 bitstream_put_ui(bs, seq_param.frame_cropping_flag, 1); /* frame_cropping_flag */
571 if (seq_param.frame_cropping_flag) {
572 bitstream_put_ue(bs, seq_param.frame_crop_left_offset); /* frame_crop_left_offset */
573 bitstream_put_ue(bs, seq_param.frame_crop_right_offset); /* frame_crop_right_offset */
574 bitstream_put_ue(bs, seq_param.frame_crop_top_offset); /* frame_crop_top_offset */
575 bitstream_put_ue(bs, seq_param.frame_crop_bottom_offset); /* frame_crop_bottom_offset */
578 //if ( frame_bit_rate < 0 ) { //TODO EW: the vui header isn't correct
580 bitstream_put_ui(bs, 0, 1); /* vui_parameters_present_flag */
582 bitstream_put_ui(bs, 1, 1); /* vui_parameters_present_flag */
583 bitstream_put_ui(bs, 0, 1); /* aspect_ratio_info_present_flag */
584 bitstream_put_ui(bs, 0, 1); /* overscan_info_present_flag */
585 bitstream_put_ui(bs, 1, 1); /* video_signal_type_present_flag */
587 bitstream_put_ui(bs, 5, 3); /* video_format (5 = Unspecified) */
588 bitstream_put_ui(bs, 0, 1); /* video_full_range_flag */
589 bitstream_put_ui(bs, 1, 1); /* colour_description_present_flag */
591 bitstream_put_ui(bs, 1, 8); /* colour_primaries (1 = BT.709) */
592 bitstream_put_ui(bs, 2, 8); /* transfer_characteristics (2 = unspecified, since we use sRGB) */
593 bitstream_put_ui(bs, 6, 8); /* matrix_coefficients (6 = BT.601/SMPTE 170M) */
596 bitstream_put_ui(bs, 0, 1); /* chroma_loc_info_present_flag */
597 bitstream_put_ui(bs, 1, 1); /* timing_info_present_flag */
599 bitstream_put_ui(bs, 1, 32); // FPS
600 bitstream_put_ui(bs, TIMEBASE * 2, 32); // FPS
601 bitstream_put_ui(bs, 1, 1);
603 bitstream_put_ui(bs, 1, 1); /* nal_hrd_parameters_present_flag */
606 bitstream_put_ue(bs, 0); /* cpb_cnt_minus1 */
607 bitstream_put_ui(bs, 4, 4); /* bit_rate_scale */
608 bitstream_put_ui(bs, 6, 4); /* cpb_size_scale */
610 bitstream_put_ue(bs, frame_bitrate - 1); /* bit_rate_value_minus1[0] */
611 bitstream_put_ue(bs, frame_bitrate*8 - 1); /* cpb_size_value_minus1[0] */
612 bitstream_put_ui(bs, 1, 1); /* cbr_flag[0] */
614 bitstream_put_ui(bs, 23, 5); /* initial_cpb_removal_delay_length_minus1 */
615 bitstream_put_ui(bs, 23, 5); /* cpb_removal_delay_length_minus1 */
616 bitstream_put_ui(bs, 23, 5); /* dpb_output_delay_length_minus1 */
617 bitstream_put_ui(bs, 23, 5); /* time_offset_length */
619 bitstream_put_ui(bs, 0, 1); /* vcl_hrd_parameters_present_flag */
620 bitstream_put_ui(bs, 0, 1); /* low_delay_hrd_flag */
622 bitstream_put_ui(bs, 0, 1); /* pic_struct_present_flag */
623 bitstream_put_ui(bs, 0, 1); /* bitstream_restriction_flag */
626 rbsp_trailing_bits(bs); /* rbsp_trailing_bits */
630 void QuickSyncEncoderImpl::pps_rbsp(bitstream *bs)
632 bitstream_put_ue(bs, pic_param.pic_parameter_set_id); /* pic_parameter_set_id */
633 bitstream_put_ue(bs, pic_param.seq_parameter_set_id); /* seq_parameter_set_id */
635 bitstream_put_ui(bs, pic_param.pic_fields.bits.entropy_coding_mode_flag, 1); /* entropy_coding_mode_flag */
637 bitstream_put_ui(bs, 0, 1); /* pic_order_present_flag: 0 */
639 bitstream_put_ue(bs, 0); /* num_slice_groups_minus1 */
641 bitstream_put_ue(bs, pic_param.num_ref_idx_l0_active_minus1); /* num_ref_idx_l0_active_minus1 */
642 bitstream_put_ue(bs, pic_param.num_ref_idx_l1_active_minus1); /* num_ref_idx_l1_active_minus1 1 */
644 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_pred_flag, 1); /* weighted_pred_flag: 0 */
645 bitstream_put_ui(bs, pic_param.pic_fields.bits.weighted_bipred_idc, 2); /* weighted_bipred_idc: 0 */
647 bitstream_put_se(bs, pic_param.pic_init_qp - 26); /* pic_init_qp_minus26 */
648 bitstream_put_se(bs, 0); /* pic_init_qs_minus26 */
649 bitstream_put_se(bs, 0); /* chroma_qp_index_offset */
651 bitstream_put_ui(bs, pic_param.pic_fields.bits.deblocking_filter_control_present_flag, 1); /* deblocking_filter_control_present_flag */
652 bitstream_put_ui(bs, 0, 1); /* constrained_intra_pred_flag */
653 bitstream_put_ui(bs, 0, 1); /* redundant_pic_cnt_present_flag */
656 bitstream_put_ui(bs, pic_param.pic_fields.bits.transform_8x8_mode_flag, 1); /*transform_8x8_mode_flag */
657 bitstream_put_ui(bs, 0, 1); /* pic_scaling_matrix_present_flag */
658 bitstream_put_se(bs, pic_param.second_chroma_qp_index_offset ); /*second_chroma_qp_index_offset */
660 rbsp_trailing_bits(bs);
663 void QuickSyncEncoderImpl::slice_header(bitstream *bs)
665 int first_mb_in_slice = slice_param.macroblock_address;
667 bitstream_put_ue(bs, first_mb_in_slice); /* first_mb_in_slice: 0 */
668 bitstream_put_ue(bs, slice_param.slice_type); /* slice_type */
669 bitstream_put_ue(bs, slice_param.pic_parameter_set_id); /* pic_parameter_set_id: 0 */
670 bitstream_put_ui(bs, pic_param.frame_num, seq_param.seq_fields.bits.log2_max_frame_num_minus4 + 4); /* frame_num */
672 /* frame_mbs_only_flag == 1 */
673 if (!seq_param.seq_fields.bits.frame_mbs_only_flag) {
678 if (pic_param.pic_fields.bits.idr_pic_flag)
679 bitstream_put_ue(bs, slice_param.idr_pic_id); /* idr_pic_id: 0 */
681 if (seq_param.seq_fields.bits.pic_order_cnt_type == 0) {
682 bitstream_put_ui(bs, pic_param.CurrPic.TopFieldOrderCnt, seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 + 4);
683 /* pic_order_present_flag == 0 */
689 /* redundant_pic_cnt_present_flag == 0 */
691 if (IS_P_SLICE(slice_param.slice_type)) {
692 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
694 if (slice_param.num_ref_idx_active_override_flag)
695 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
697 /* ref_pic_list_reordering */
698 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
699 } else if (IS_B_SLICE(slice_param.slice_type)) {
700 bitstream_put_ui(bs, slice_param.direct_spatial_mv_pred_flag, 1); /* direct_spatial_mv_pred: 1 */
702 bitstream_put_ui(bs, slice_param.num_ref_idx_active_override_flag, 1); /* num_ref_idx_active_override_flag: */
704 if (slice_param.num_ref_idx_active_override_flag) {
705 bitstream_put_ue(bs, slice_param.num_ref_idx_l0_active_minus1);
706 bitstream_put_ue(bs, slice_param.num_ref_idx_l1_active_minus1);
709 /* ref_pic_list_reordering */
710 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l0: 0 */
711 bitstream_put_ui(bs, 0, 1); /* ref_pic_list_reordering_flag_l1: 0 */
714 if ((pic_param.pic_fields.bits.weighted_pred_flag &&
715 IS_P_SLICE(slice_param.slice_type)) ||
716 ((pic_param.pic_fields.bits.weighted_bipred_idc == 1) &&
717 IS_B_SLICE(slice_param.slice_type))) {
718 /* FIXME: fill weight/offset table */
722 /* dec_ref_pic_marking */
723 if (pic_param.pic_fields.bits.reference_pic_flag) { /* nal_ref_idc != 0 */
724 unsigned char no_output_of_prior_pics_flag = 0;
725 unsigned char long_term_reference_flag = 0;
726 unsigned char adaptive_ref_pic_marking_mode_flag = 0;
728 if (pic_param.pic_fields.bits.idr_pic_flag) {
729 bitstream_put_ui(bs, no_output_of_prior_pics_flag, 1); /* no_output_of_prior_pics_flag: 0 */
730 bitstream_put_ui(bs, long_term_reference_flag, 1); /* long_term_reference_flag: 0 */
732 bitstream_put_ui(bs, adaptive_ref_pic_marking_mode_flag, 1); /* adaptive_ref_pic_marking_mode_flag: 0 */
736 if (pic_param.pic_fields.bits.entropy_coding_mode_flag &&
737 !IS_I_SLICE(slice_param.slice_type))
738 bitstream_put_ue(bs, slice_param.cabac_init_idc); /* cabac_init_idc: 0 */
740 bitstream_put_se(bs, slice_param.slice_qp_delta); /* slice_qp_delta: 0 */
742 /* ignore for SP/SI */
744 if (pic_param.pic_fields.bits.deblocking_filter_control_present_flag) {
745 bitstream_put_ue(bs, slice_param.disable_deblocking_filter_idc); /* disable_deblocking_filter_idc: 0 */
747 if (slice_param.disable_deblocking_filter_idc != 1) {
748 bitstream_put_se(bs, slice_param.slice_alpha_c0_offset_div2); /* slice_alpha_c0_offset_div2: 2 */
749 bitstream_put_se(bs, slice_param.slice_beta_offset_div2); /* slice_beta_offset_div2: 2 */
753 if (pic_param.pic_fields.bits.entropy_coding_mode_flag) {
754 bitstream_byte_aligning(bs, 1);
758 int QuickSyncEncoderImpl::build_packed_pic_buffer(unsigned char **header_buffer)
762 bitstream_start(&bs);
763 nal_start_code_prefix(&bs);
764 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_PPS);
768 *header_buffer = (unsigned char *)bs.buffer;
769 return bs.bit_offset;
773 QuickSyncEncoderImpl::build_packed_seq_buffer(unsigned char **header_buffer)
777 bitstream_start(&bs);
778 nal_start_code_prefix(&bs);
779 nal_header(&bs, NAL_REF_IDC_HIGH, NAL_SPS);
783 *header_buffer = (unsigned char *)bs.buffer;
784 return bs.bit_offset;
787 int QuickSyncEncoderImpl::build_packed_slice_buffer(unsigned char **header_buffer)
790 int is_idr = !!pic_param.pic_fields.bits.idr_pic_flag;
791 int is_ref = !!pic_param.pic_fields.bits.reference_pic_flag;
793 bitstream_start(&bs);
794 nal_start_code_prefix(&bs);
796 if (IS_I_SLICE(slice_param.slice_type)) {
797 nal_header(&bs, NAL_REF_IDC_HIGH, is_idr ? NAL_IDR : NAL_NON_IDR);
798 } else if (IS_P_SLICE(slice_param.slice_type)) {
799 nal_header(&bs, NAL_REF_IDC_MEDIUM, NAL_NON_IDR);
801 assert(IS_B_SLICE(slice_param.slice_type));
802 nal_header(&bs, is_ref ? NAL_REF_IDC_LOW : NAL_REF_IDC_NONE, NAL_NON_IDR);
808 *header_buffer = (unsigned char *)bs.buffer;
809 return bs.bit_offset;
814 Assume frame sequence is: Frame#0, #1, #2, ..., #M, ..., #X, ... (encoding order)
815 1) period between Frame #X and Frame #N = #X - #N
816 2) 0 means infinite for intra_period/intra_idr_period, and 0 is invalid for ip_period
817 3) intra_idr_period % intra_period (intra_period > 0) and intra_period % ip_period must be 0
818 4) intra_period and intra_idr_period take precedence over ip_period
819 5) if ip_period > 1, intra_period and intra_idr_period are not the strict periods
820 of I/IDR frames, see bellow examples
821 -------------------------------------------------------------------
822 intra_period intra_idr_period ip_period frame sequence (intra_period/intra_idr_period/ip_period)
823 0 ignored 1 IDRPPPPPPP ... (No IDR/I any more)
824 0 ignored >=2 IDR(PBB)(PBB)... (No IDR/I any more)
825 1 0 ignored IDRIIIIIII... (No IDR any more)
826 1 1 ignored IDR IDR IDR IDR...
827 1 >=2 ignored IDRII IDRII IDR... (1/3/ignore)
828 >=2 0 1 IDRPPP IPPP I... (3/0/1)
829 >=2 0 >=2 IDR(PBB)(PBB)(IBB) (6/0/3)
830 (PBB)(IBB)(PBB)(IBB)...
831 >=2 >=2 1 IDRPPPPP IPPPPP IPPPPP (6/18/1)
832 IDRPPPPP IPPPPP IPPPPP...
833 >=2 >=2 >=2 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)} (6/18/3)
834 {IDR(PBB)(PBB)(IBB)(PBB)(IBB)(PBB)}...
835 {IDR(PBB)(PBB)(IBB)(PBB)} (6/12/3)
836 {IDR(PBB)(PBB)(IBB)(PBB)}...
837 {IDR(PBB)(PBB)} (6/6/3)
841 // General pts/dts strategy:
843 // Getting pts and dts right with variable frame rate (VFR) and B-frames can be a
844 // bit tricky. We assume first of all that the frame rate never goes _above_
845 // MAX_FPS, which gives us a frame period N. The decoder can always decode
846 // in at least this speed, as long at dts <= pts (the frame is not attempted
847 // presented before it is decoded). Furthermore, we never have longer chains of
848 // B-frames than a fixed constant C. (In a B-frame chain, we say that the base
849 // I/P-frame has order O=0, the B-frame depending on it directly has order O=1,
850 // etc. The last frame in the chain, which no B-frames depend on, is the “tip”
851 // frame, with an order O <= C.)
853 // Many strategies are possible, but we establish these rules:
855 // - Tip frames have dts = pts - (C-O)*N.
856 // - Non-tip frames have dts = dts_last + N.
858 // An example, with C=2 and N=10 and the data flow showed with arrows:
861 // pts: 30 40 50 60 70 80
863 // dts: 10 30 20 60 50←40
868 // To show that this works fine also with irregular spacings, let's say that
869 // the third frame is delayed a bit (something earlier was dropped). Now the
870 // situation looks like this:
873 // pts: 30 40 80 90 100 110
875 // dts: 10 30 20 90 50←40
880 // The resetting on every tip frame makes sure dts never ends up lagging a lot
881 // behind pts, and the subtraction of (C-O)*N makes sure pts <= dts.
883 // In the output of this function, if <dts_lag> is >= 0, it means to reset the
884 // dts from the current pts minus <dts_lag>, while if it's -1, the frame is not
885 // a tip frame and should be given a dts based on the previous one.
890 void encoding2display_order(
891 int encoding_order, int intra_period,
892 int intra_idr_period, int ip_period,
893 int *displaying_order,
894 int *frame_type, int *pts_lag)
896 int encoding_order_gop = 0;
900 if (intra_period == 1) { /* all are I/IDR frames */
901 *displaying_order = encoding_order;
902 if (intra_idr_period == 0)
903 *frame_type = (encoding_order == 0)?FRAME_IDR:FRAME_I;
905 *frame_type = (encoding_order % intra_idr_period == 0)?FRAME_IDR:FRAME_I;
909 if (intra_period == 0)
910 intra_idr_period = 0;
912 if (ip_period == 1) {
913 // No B-frames, sequence is like IDR PPPPP IPPPPP.
914 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % intra_idr_period);
915 *displaying_order = encoding_order;
917 if (encoding_order_gop == 0) { /* the first frame */
918 *frame_type = FRAME_IDR;
919 } else if (intra_period != 0 && /* have I frames */
920 encoding_order_gop >= 2 &&
921 (encoding_order_gop % intra_period == 0)) {
922 *frame_type = FRAME_I;
924 *frame_type = FRAME_P;
929 // We have B-frames. Sequence is like IDR (PBB)(PBB)(IBB)(PBB).
930 encoding_order_gop = (intra_idr_period == 0) ? encoding_order : (encoding_order % (intra_idr_period + 1));
931 *pts_lag = -1; // Most frames are not tip frames.
933 if (encoding_order_gop == 0) { /* the first frame */
934 *frame_type = FRAME_IDR;
935 *displaying_order = encoding_order;
936 // IDR frames are a special case; I honestly can't find the logic behind
937 // why this is the right thing, but it seems to line up nicely in practice :-)
938 *pts_lag = TIMEBASE / MAX_FPS;
939 } else if (((encoding_order_gop - 1) % ip_period) != 0) { /* B frames */
940 *frame_type = FRAME_B;
941 *displaying_order = encoding_order - 1;
942 if ((encoding_order_gop % ip_period) == 0) {
943 *pts_lag = 0; // Last B-frame.
945 } else if (intra_period != 0 && /* have I frames */
946 encoding_order_gop >= 2 &&
947 ((encoding_order_gop - 1) / ip_period % (intra_period / ip_period)) == 0) {
948 *frame_type = FRAME_I;
949 *displaying_order = encoding_order + ip_period - 1;
951 *frame_type = FRAME_P;
952 *displaying_order = encoding_order + ip_period - 1;
957 static const char *rc_to_string(int rc_mode)
970 case VA_RC_VBR_CONSTRAINED:
971 return "VBR_CONSTRAINED";
977 void QuickSyncEncoderImpl::enable_zerocopy_if_possible()
979 if (global_flags.uncompressed_video_to_http) {
980 fprintf(stderr, "Disabling zerocopy H.264 encoding due to --http-uncompressed-video.\n");
981 use_zerocopy = false;
982 } else if (global_flags.x264_video_to_http) {
983 fprintf(stderr, "Disabling zerocopy H.264 encoding due to --http-x264-video.\n");
984 use_zerocopy = false;
990 VADisplay QuickSyncEncoderImpl::va_open_display(const string &va_display)
992 if (va_display.empty()) {
993 x11_display = XOpenDisplay(NULL);
995 fprintf(stderr, "error: can't connect to X server!\n");
998 enable_zerocopy_if_possible();
999 return vaGetDisplay(x11_display);
1000 } else if (va_display[0] != '/') {
1001 x11_display = XOpenDisplay(va_display.c_str());
1003 fprintf(stderr, "error: can't connect to X server!\n");
1006 enable_zerocopy_if_possible();
1007 return vaGetDisplay(x11_display);
1009 drm_fd = open(va_display.c_str(), O_RDWR);
1011 perror(va_display.c_str());
1014 use_zerocopy = false;
1015 return vaGetDisplayDRM(drm_fd);
1019 void QuickSyncEncoderImpl::va_close_display(VADisplay va_dpy)
1022 XCloseDisplay(x11_display);
1023 x11_display = nullptr;
1030 int QuickSyncEncoderImpl::init_va(const string &va_display)
1032 VAProfile profile_list[]={VAProfileH264High, VAProfileH264Main, VAProfileH264Baseline, VAProfileH264ConstrainedBaseline};
1033 VAEntrypoint *entrypoints;
1034 int num_entrypoints, slice_entrypoint;
1035 int support_encode = 0;
1036 int major_ver, minor_ver;
1040 va_dpy = va_open_display(va_display);
1041 va_status = vaInitialize(va_dpy, &major_ver, &minor_ver);
1042 CHECK_VASTATUS(va_status, "vaInitialize");
1044 num_entrypoints = vaMaxNumEntrypoints(va_dpy);
1045 entrypoints = (VAEntrypoint *)malloc(num_entrypoints * sizeof(*entrypoints));
1047 fprintf(stderr, "error: failed to initialize VA entrypoints array\n");
1051 /* use the highest profile */
1052 for (i = 0; i < sizeof(profile_list)/sizeof(profile_list[0]); i++) {
1053 if ((h264_profile != ~0) && h264_profile != profile_list[i])
1056 h264_profile = profile_list[i];
1057 vaQueryConfigEntrypoints(va_dpy, h264_profile, entrypoints, &num_entrypoints);
1058 for (slice_entrypoint = 0; slice_entrypoint < num_entrypoints; slice_entrypoint++) {
1059 if (entrypoints[slice_entrypoint] == VAEntrypointEncSlice) {
1064 if (support_encode == 1)
1068 if (support_encode == 0) {
1069 printf("Can't find VAEntrypointEncSlice for H264 profiles. If you are using a non-Intel GPU\n");
1070 printf("but have one in your system, try launching Nageru with --va-display /dev/dri/renderD128\n");
1071 printf("to use VA-API against DRM instead of X11.\n");
1074 switch (h264_profile) {
1075 case VAProfileH264Baseline:
1077 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
1078 h264_entropy_mode = 0;
1080 case VAProfileH264ConstrainedBaseline:
1081 constraint_set_flag |= (1 << 0 | 1 << 1); /* Annex A.2.2 */
1085 case VAProfileH264Main:
1086 constraint_set_flag |= (1 << 1); /* Annex A.2.2 */
1089 case VAProfileH264High:
1090 constraint_set_flag |= (1 << 3); /* Annex A.2.4 */
1093 h264_profile = VAProfileH264Baseline;
1095 constraint_set_flag |= (1 << 0); /* Annex A.2.1 */
1100 VAConfigAttrib attrib[VAConfigAttribTypeMax];
1102 /* find out the format for the render target, and rate control mode */
1103 for (i = 0; i < VAConfigAttribTypeMax; i++)
1104 attrib[i].type = (VAConfigAttribType)i;
1106 va_status = vaGetConfigAttributes(va_dpy, h264_profile, VAEntrypointEncSlice,
1107 &attrib[0], VAConfigAttribTypeMax);
1108 CHECK_VASTATUS(va_status, "vaGetConfigAttributes");
1109 /* check the interested configattrib */
1110 if ((attrib[VAConfigAttribRTFormat].value & VA_RT_FORMAT_YUV420) == 0) {
1111 printf("Not find desired YUV420 RT format\n");
1114 config_attrib[config_attrib_num].type = VAConfigAttribRTFormat;
1115 config_attrib[config_attrib_num].value = VA_RT_FORMAT_YUV420;
1116 config_attrib_num++;
1119 if (attrib[VAConfigAttribRateControl].value != VA_ATTRIB_NOT_SUPPORTED) {
1120 int tmp = attrib[VAConfigAttribRateControl].value;
1122 if (rc_mode == -1 || !(rc_mode & tmp)) {
1123 if (rc_mode != -1) {
1124 printf("Warning: Don't support the specified RateControl mode: %s!!!, switch to ", rc_to_string(rc_mode));
1127 for (i = 0; i < sizeof(rc_default_modes) / sizeof(rc_default_modes[0]); i++) {
1128 if (rc_default_modes[i] & tmp) {
1129 rc_mode = rc_default_modes[i];
1135 config_attrib[config_attrib_num].type = VAConfigAttribRateControl;
1136 config_attrib[config_attrib_num].value = rc_mode;
1137 config_attrib_num++;
1141 if (attrib[VAConfigAttribEncPackedHeaders].value != VA_ATTRIB_NOT_SUPPORTED) {
1142 int tmp = attrib[VAConfigAttribEncPackedHeaders].value;
1144 h264_packedheader = 1;
1145 config_attrib[config_attrib_num].type = VAConfigAttribEncPackedHeaders;
1146 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
1148 if (tmp & VA_ENC_PACKED_HEADER_SEQUENCE) {
1149 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SEQUENCE;
1152 if (tmp & VA_ENC_PACKED_HEADER_PICTURE) {
1153 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_PICTURE;
1156 if (tmp & VA_ENC_PACKED_HEADER_SLICE) {
1157 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_SLICE;
1160 if (tmp & VA_ENC_PACKED_HEADER_MISC) {
1161 config_attrib[config_attrib_num].value |= VA_ENC_PACKED_HEADER_MISC;
1164 enc_packed_header_idx = config_attrib_num;
1165 config_attrib_num++;
1168 if (attrib[VAConfigAttribEncInterlaced].value != VA_ATTRIB_NOT_SUPPORTED) {
1169 config_attrib[config_attrib_num].type = VAConfigAttribEncInterlaced;
1170 config_attrib[config_attrib_num].value = VA_ENC_PACKED_HEADER_NONE;
1171 config_attrib_num++;
1174 if (attrib[VAConfigAttribEncMaxRefFrames].value != VA_ATTRIB_NOT_SUPPORTED) {
1175 h264_maxref = attrib[VAConfigAttribEncMaxRefFrames].value;
1182 int QuickSyncEncoderImpl::setup_encode()
1185 VASurfaceID *tmp_surfaceid;
1186 int codedbuf_size, i;
1187 static VASurfaceID src_surface[SURFACE_NUM];
1188 static VASurfaceID ref_surface[SURFACE_NUM];
1190 va_status = vaCreateConfig(va_dpy, h264_profile, VAEntrypointEncSlice,
1191 &config_attrib[0], config_attrib_num, &config_id);
1192 CHECK_VASTATUS(va_status, "vaCreateConfig");
1194 /* create source surfaces */
1195 va_status = vaCreateSurfaces(va_dpy,
1196 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
1197 &src_surface[0], SURFACE_NUM,
1199 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
1201 /* create reference surfaces */
1202 va_status = vaCreateSurfaces(va_dpy,
1203 VA_RT_FORMAT_YUV420, frame_width_mbaligned, frame_height_mbaligned,
1204 &ref_surface[0], SURFACE_NUM,
1206 CHECK_VASTATUS(va_status, "vaCreateSurfaces");
1208 tmp_surfaceid = (VASurfaceID *)calloc(2 * SURFACE_NUM, sizeof(VASurfaceID));
1209 memcpy(tmp_surfaceid, src_surface, SURFACE_NUM * sizeof(VASurfaceID));
1210 memcpy(tmp_surfaceid + SURFACE_NUM, ref_surface, SURFACE_NUM * sizeof(VASurfaceID));
1212 /* Create a context for this encode pipe */
1213 va_status = vaCreateContext(va_dpy, config_id,
1214 frame_width_mbaligned, frame_height_mbaligned,
1216 tmp_surfaceid, 2 * SURFACE_NUM,
1218 CHECK_VASTATUS(va_status, "vaCreateContext");
1219 free(tmp_surfaceid);
1221 codedbuf_size = (frame_width_mbaligned * frame_height_mbaligned * 400) / (16*16);
1223 for (i = 0; i < SURFACE_NUM; i++) {
1224 /* create coded buffer once for all
1225 * other VA buffers which won't be used again after vaRenderPicture.
1226 * so APP can always vaCreateBuffer for every frame
1227 * but coded buffer need to be mapped and accessed after vaRenderPicture/vaEndPicture
1228 * so VA won't maintain the coded buffer
1230 va_status = vaCreateBuffer(va_dpy, context_id, VAEncCodedBufferType,
1231 codedbuf_size, 1, NULL, &gl_surfaces[i].coded_buf);
1232 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1235 /* create OpenGL objects */
1236 //glGenFramebuffers(SURFACE_NUM, fbos);
1238 for (i = 0; i < SURFACE_NUM; i++) {
1239 glGenTextures(1, &gl_surfaces[i].y_tex);
1240 glGenTextures(1, &gl_surfaces[i].cbcr_tex);
1242 if (!use_zerocopy) {
1244 glBindTexture(GL_TEXTURE_2D, gl_surfaces[i].y_tex);
1245 glTexStorage2D(GL_TEXTURE_2D, 1, GL_R8, frame_width, frame_height);
1247 // Create CbCr image.
1248 glBindTexture(GL_TEXTURE_2D, gl_surfaces[i].cbcr_tex);
1249 glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG8, frame_width / 2, frame_height / 2);
1251 // Generate a PBO to read into. It doesn't necessarily fit 1:1 with the VA-API
1252 // buffers, due to potentially differing pitch.
1253 glGenBuffers(1, &gl_surfaces[i].pbo);
1254 glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1255 glBufferStorage(GL_PIXEL_PACK_BUFFER, frame_width * frame_height * 2, nullptr, GL_MAP_READ_BIT | GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT);
1256 uint8_t *ptr = (uint8_t *)glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, frame_width * frame_height * 2, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT);
1257 gl_surfaces[i].y_offset = 0;
1258 gl_surfaces[i].cbcr_offset = frame_width * frame_height;
1259 gl_surfaces[i].y_ptr = ptr + gl_surfaces[i].y_offset;
1260 gl_surfaces[i].cbcr_ptr = ptr + gl_surfaces[i].cbcr_offset;
1261 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1265 for (i = 0; i < SURFACE_NUM; i++) {
1266 gl_surfaces[i].src_surface = src_surface[i];
1267 gl_surfaces[i].ref_surface = ref_surface[i];
1273 // Given a list like 1 9 3 0 2 8 4 and a pivot element 3, will produce
1276 template<class T, class C>
1277 static void sort_two(T *begin, T *end, const T &pivot, const C &less_than)
1279 T *middle = partition(begin, end, [&](const T &elem) { return less_than(elem, pivot); });
1280 sort(begin, middle, [&](const T &a, const T &b) { return less_than(b, a); });
1281 sort(middle, end, less_than);
1284 void QuickSyncEncoderImpl::update_ReferenceFrames(int frame_type)
1288 if (frame_type == FRAME_B)
1291 CurrentCurrPic.flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
1293 if (numShortTerm > num_ref_frames)
1294 numShortTerm = num_ref_frames;
1295 for (i=numShortTerm-1; i>0; i--)
1296 ReferenceFrames[i] = ReferenceFrames[i-1];
1297 ReferenceFrames[0] = CurrentCurrPic;
1299 current_frame_num++;
1300 if (current_frame_num > MaxFrameNum)
1301 current_frame_num = 0;
1305 int QuickSyncEncoderImpl::update_RefPicList(int frame_type)
1307 const auto descending_by_frame_idx = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1308 return a.frame_idx > b.frame_idx;
1310 const auto ascending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1311 return a.TopFieldOrderCnt < b.TopFieldOrderCnt;
1313 const auto descending_by_top_field_order_cnt = [](const VAPictureH264 &a, const VAPictureH264 &b) {
1314 return a.TopFieldOrderCnt > b.TopFieldOrderCnt;
1317 if (frame_type == FRAME_P) {
1318 memcpy(RefPicList0_P, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1319 sort(&RefPicList0_P[0], &RefPicList0_P[numShortTerm], descending_by_frame_idx);
1320 } else if (frame_type == FRAME_B) {
1321 memcpy(RefPicList0_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1322 sort_two(&RefPicList0_B[0], &RefPicList0_B[numShortTerm], CurrentCurrPic, ascending_by_top_field_order_cnt);
1324 memcpy(RefPicList1_B, ReferenceFrames, numShortTerm * sizeof(VAPictureH264));
1325 sort_two(&RefPicList1_B[0], &RefPicList1_B[numShortTerm], CurrentCurrPic, descending_by_top_field_order_cnt);
1332 int QuickSyncEncoderImpl::render_sequence()
1334 VABufferID seq_param_buf, rc_param_buf, render_id[2];
1336 VAEncMiscParameterBuffer *misc_param;
1337 VAEncMiscParameterRateControl *misc_rate_ctrl;
1339 seq_param.level_idc = 41 /*SH_LEVEL_3*/;
1340 seq_param.picture_width_in_mbs = frame_width_mbaligned / 16;
1341 seq_param.picture_height_in_mbs = frame_height_mbaligned / 16;
1342 seq_param.bits_per_second = frame_bitrate;
1344 seq_param.intra_period = intra_period;
1345 seq_param.intra_idr_period = intra_idr_period;
1346 seq_param.ip_period = ip_period;
1348 seq_param.max_num_ref_frames = num_ref_frames;
1349 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1350 seq_param.time_scale = TIMEBASE * 2;
1351 seq_param.num_units_in_tick = 1; /* Tc = num_units_in_tick / scale */
1352 seq_param.seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 = Log2MaxPicOrderCntLsb - 4;
1353 seq_param.seq_fields.bits.log2_max_frame_num_minus4 = Log2MaxFrameNum - 4;;
1354 seq_param.seq_fields.bits.frame_mbs_only_flag = 1;
1355 seq_param.seq_fields.bits.chroma_format_idc = 1;
1356 seq_param.seq_fields.bits.direct_8x8_inference_flag = 1;
1358 if (frame_width != frame_width_mbaligned ||
1359 frame_height != frame_height_mbaligned) {
1360 seq_param.frame_cropping_flag = 1;
1361 seq_param.frame_crop_left_offset = 0;
1362 seq_param.frame_crop_right_offset = (frame_width_mbaligned - frame_width)/2;
1363 seq_param.frame_crop_top_offset = 0;
1364 seq_param.frame_crop_bottom_offset = (frame_height_mbaligned - frame_height)/2;
1367 va_status = vaCreateBuffer(va_dpy, context_id,
1368 VAEncSequenceParameterBufferType,
1369 sizeof(seq_param), 1, &seq_param, &seq_param_buf);
1370 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1372 va_status = vaCreateBuffer(va_dpy, context_id,
1373 VAEncMiscParameterBufferType,
1374 sizeof(VAEncMiscParameterBuffer) + sizeof(VAEncMiscParameterRateControl),
1375 1, NULL, &rc_param_buf);
1376 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1378 vaMapBuffer(va_dpy, rc_param_buf, (void **)&misc_param);
1379 misc_param->type = VAEncMiscParameterTypeRateControl;
1380 misc_rate_ctrl = (VAEncMiscParameterRateControl *)misc_param->data;
1381 memset(misc_rate_ctrl, 0, sizeof(*misc_rate_ctrl));
1382 misc_rate_ctrl->bits_per_second = frame_bitrate;
1383 misc_rate_ctrl->target_percentage = 66;
1384 misc_rate_ctrl->window_size = 1000;
1385 misc_rate_ctrl->initial_qp = initial_qp;
1386 misc_rate_ctrl->min_qp = minimal_qp;
1387 misc_rate_ctrl->basic_unit_size = 0;
1388 vaUnmapBuffer(va_dpy, rc_param_buf);
1390 render_id[0] = seq_param_buf;
1391 render_id[1] = rc_param_buf;
1393 render_picture_and_delete(va_dpy, context_id, &render_id[0], 2);
1398 static int calc_poc(int pic_order_cnt_lsb, int frame_type)
1400 static int PicOrderCntMsb_ref = 0, pic_order_cnt_lsb_ref = 0;
1401 int prevPicOrderCntMsb, prevPicOrderCntLsb;
1402 int PicOrderCntMsb, TopFieldOrderCnt;
1404 if (frame_type == FRAME_IDR)
1405 prevPicOrderCntMsb = prevPicOrderCntLsb = 0;
1407 prevPicOrderCntMsb = PicOrderCntMsb_ref;
1408 prevPicOrderCntLsb = pic_order_cnt_lsb_ref;
1411 if ((pic_order_cnt_lsb < prevPicOrderCntLsb) &&
1412 ((prevPicOrderCntLsb - pic_order_cnt_lsb) >= (int)(MaxPicOrderCntLsb / 2)))
1413 PicOrderCntMsb = prevPicOrderCntMsb + MaxPicOrderCntLsb;
1414 else if ((pic_order_cnt_lsb > prevPicOrderCntLsb) &&
1415 ((pic_order_cnt_lsb - prevPicOrderCntLsb) > (int)(MaxPicOrderCntLsb / 2)))
1416 PicOrderCntMsb = prevPicOrderCntMsb - MaxPicOrderCntLsb;
1418 PicOrderCntMsb = prevPicOrderCntMsb;
1420 TopFieldOrderCnt = PicOrderCntMsb + pic_order_cnt_lsb;
1422 if (frame_type != FRAME_B) {
1423 PicOrderCntMsb_ref = PicOrderCntMsb;
1424 pic_order_cnt_lsb_ref = pic_order_cnt_lsb;
1427 return TopFieldOrderCnt;
1430 int QuickSyncEncoderImpl::render_picture(int frame_type, int display_frame_num, int gop_start_display_frame_num)
1432 VABufferID pic_param_buf;
1436 pic_param.CurrPic.picture_id = gl_surfaces[display_frame_num % SURFACE_NUM].ref_surface;
1437 pic_param.CurrPic.frame_idx = current_frame_num;
1438 pic_param.CurrPic.flags = 0;
1439 pic_param.CurrPic.TopFieldOrderCnt = calc_poc((display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb, frame_type);
1440 pic_param.CurrPic.BottomFieldOrderCnt = pic_param.CurrPic.TopFieldOrderCnt;
1441 CurrentCurrPic = pic_param.CurrPic;
1443 memcpy(pic_param.ReferenceFrames, ReferenceFrames, numShortTerm*sizeof(VAPictureH264));
1444 for (i = numShortTerm; i < MAX_NUM_REF1; i++) {
1445 pic_param.ReferenceFrames[i].picture_id = VA_INVALID_SURFACE;
1446 pic_param.ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
1449 pic_param.pic_fields.bits.idr_pic_flag = (frame_type == FRAME_IDR);
1450 pic_param.pic_fields.bits.reference_pic_flag = (frame_type != FRAME_B);
1451 pic_param.pic_fields.bits.entropy_coding_mode_flag = h264_entropy_mode;
1452 pic_param.pic_fields.bits.deblocking_filter_control_present_flag = 1;
1453 pic_param.frame_num = current_frame_num;
1454 pic_param.coded_buf = gl_surfaces[display_frame_num % SURFACE_NUM].coded_buf;
1455 pic_param.last_picture = false; // FIXME
1456 pic_param.pic_init_qp = initial_qp;
1458 va_status = vaCreateBuffer(va_dpy, context_id, VAEncPictureParameterBufferType,
1459 sizeof(pic_param), 1, &pic_param, &pic_param_buf);
1460 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1462 render_picture_and_delete(va_dpy, context_id, &pic_param_buf, 1);
1467 int QuickSyncEncoderImpl::render_packedsequence()
1469 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1470 VABufferID packedseq_para_bufid, packedseq_data_bufid, render_id[2];
1471 unsigned int length_in_bits;
1472 unsigned char *packedseq_buffer = NULL;
1475 length_in_bits = build_packed_seq_buffer(&packedseq_buffer);
1477 packedheader_param_buffer.type = VAEncPackedHeaderSequence;
1479 packedheader_param_buffer.bit_length = length_in_bits; /*length_in_bits*/
1480 packedheader_param_buffer.has_emulation_bytes = 0;
1481 va_status = vaCreateBuffer(va_dpy,
1483 VAEncPackedHeaderParameterBufferType,
1484 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1485 &packedseq_para_bufid);
1486 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1488 va_status = vaCreateBuffer(va_dpy,
1490 VAEncPackedHeaderDataBufferType,
1491 (length_in_bits + 7) / 8, 1, packedseq_buffer,
1492 &packedseq_data_bufid);
1493 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1495 render_id[0] = packedseq_para_bufid;
1496 render_id[1] = packedseq_data_bufid;
1497 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1499 free(packedseq_buffer);
1505 int QuickSyncEncoderImpl::render_packedpicture()
1507 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1508 VABufferID packedpic_para_bufid, packedpic_data_bufid, render_id[2];
1509 unsigned int length_in_bits;
1510 unsigned char *packedpic_buffer = NULL;
1513 length_in_bits = build_packed_pic_buffer(&packedpic_buffer);
1514 packedheader_param_buffer.type = VAEncPackedHeaderPicture;
1515 packedheader_param_buffer.bit_length = length_in_bits;
1516 packedheader_param_buffer.has_emulation_bytes = 0;
1518 va_status = vaCreateBuffer(va_dpy,
1520 VAEncPackedHeaderParameterBufferType,
1521 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1522 &packedpic_para_bufid);
1523 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1525 va_status = vaCreateBuffer(va_dpy,
1527 VAEncPackedHeaderDataBufferType,
1528 (length_in_bits + 7) / 8, 1, packedpic_buffer,
1529 &packedpic_data_bufid);
1530 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1532 render_id[0] = packedpic_para_bufid;
1533 render_id[1] = packedpic_data_bufid;
1534 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1536 free(packedpic_buffer);
1541 void QuickSyncEncoderImpl::render_packedslice()
1543 VAEncPackedHeaderParameterBuffer packedheader_param_buffer;
1544 VABufferID packedslice_para_bufid, packedslice_data_bufid, render_id[2];
1545 unsigned int length_in_bits;
1546 unsigned char *packedslice_buffer = NULL;
1549 length_in_bits = build_packed_slice_buffer(&packedslice_buffer);
1550 packedheader_param_buffer.type = VAEncPackedHeaderSlice;
1551 packedheader_param_buffer.bit_length = length_in_bits;
1552 packedheader_param_buffer.has_emulation_bytes = 0;
1554 va_status = vaCreateBuffer(va_dpy,
1556 VAEncPackedHeaderParameterBufferType,
1557 sizeof(packedheader_param_buffer), 1, &packedheader_param_buffer,
1558 &packedslice_para_bufid);
1559 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1561 va_status = vaCreateBuffer(va_dpy,
1563 VAEncPackedHeaderDataBufferType,
1564 (length_in_bits + 7) / 8, 1, packedslice_buffer,
1565 &packedslice_data_bufid);
1566 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1568 render_id[0] = packedslice_para_bufid;
1569 render_id[1] = packedslice_data_bufid;
1570 render_picture_and_delete(va_dpy, context_id, render_id, 2);
1572 free(packedslice_buffer);
1575 int QuickSyncEncoderImpl::render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type)
1577 VABufferID slice_param_buf;
1581 update_RefPicList(frame_type);
1583 /* one frame, one slice */
1584 slice_param.macroblock_address = 0;
1585 slice_param.num_macroblocks = frame_width_mbaligned * frame_height_mbaligned/(16*16); /* Measured by MB */
1586 slice_param.slice_type = (frame_type == FRAME_IDR)?2:frame_type;
1587 if (frame_type == FRAME_IDR) {
1588 if (encoding_frame_num != 0)
1589 ++slice_param.idr_pic_id;
1590 } else if (frame_type == FRAME_P) {
1591 int refpiclist0_max = h264_maxref & 0xffff;
1592 memcpy(slice_param.RefPicList0, RefPicList0_P, refpiclist0_max*sizeof(VAPictureH264));
1594 for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1595 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1596 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1598 } else if (frame_type == FRAME_B) {
1599 int refpiclist0_max = h264_maxref & 0xffff;
1600 int refpiclist1_max = (h264_maxref >> 16) & 0xffff;
1602 memcpy(slice_param.RefPicList0, RefPicList0_B, refpiclist0_max*sizeof(VAPictureH264));
1603 for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
1604 slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
1605 slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1608 memcpy(slice_param.RefPicList1, RefPicList1_B, refpiclist1_max*sizeof(VAPictureH264));
1609 for (i = refpiclist1_max; i < MAX_NUM_REF2; i++) {
1610 slice_param.RefPicList1[i].picture_id = VA_INVALID_SURFACE;
1611 slice_param.RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
1615 slice_param.slice_alpha_c0_offset_div2 = 0;
1616 slice_param.slice_beta_offset_div2 = 0;
1617 slice_param.direct_spatial_mv_pred_flag = 1;
1618 slice_param.pic_order_cnt_lsb = (display_frame_num - gop_start_display_frame_num) % MaxPicOrderCntLsb;
1621 if (h264_packedheader &&
1622 config_attrib[enc_packed_header_idx].value & VA_ENC_PACKED_HEADER_SLICE)
1623 render_packedslice();
1625 va_status = vaCreateBuffer(va_dpy, context_id, VAEncSliceParameterBufferType,
1626 sizeof(slice_param), 1, &slice_param, &slice_param_buf);
1627 CHECK_VASTATUS(va_status, "vaCreateBuffer");
1629 render_picture_and_delete(va_dpy, context_id, &slice_param_buf, 1);
1636 void QuickSyncEncoderImpl::save_codeddata(storage_task task)
1638 VACodedBufferSegment *buf_list = NULL;
1643 va_status = vaMapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf, (void **)(&buf_list));
1644 CHECK_VASTATUS(va_status, "vaMapBuffer");
1645 while (buf_list != NULL) {
1646 data.append(reinterpret_cast<const char *>(buf_list->buf), buf_list->size);
1647 buf_list = (VACodedBufferSegment *) buf_list->next;
1649 vaUnmapBuffer(va_dpy, gl_surfaces[task.display_order % SURFACE_NUM].coded_buf);
1654 memset(&pkt, 0, sizeof(pkt));
1656 pkt.data = reinterpret_cast<uint8_t *>(&data[0]);
1657 pkt.size = data.size();
1658 pkt.stream_index = 0;
1659 if (task.frame_type == FRAME_IDR) {
1660 pkt.flags = AV_PKT_FLAG_KEY;
1664 pkt.duration = task.duration;
1666 file_mux->add_packet(pkt, task.pts + global_delay(), task.dts + global_delay());
1668 if (!global_flags.uncompressed_video_to_http &&
1669 !global_flags.x264_video_to_http) {
1670 stream_mux->add_packet(pkt, task.pts + global_delay(), task.dts + global_delay());
1673 // Encode and add all audio frames up to and including the pts of this video frame.
1676 vector<float> audio;
1678 unique_lock<mutex> lock(frame_queue_mutex);
1679 frame_queue_nonempty.wait(lock, [this]{ return storage_thread_should_quit || !pending_audio_frames.empty(); });
1680 if (storage_thread_should_quit && pending_audio_frames.empty()) return;
1681 auto it = pending_audio_frames.begin();
1682 if (it->first > task.pts) break;
1683 audio_pts = it->first;
1684 audio = move(it->second);
1685 pending_audio_frames.erase(it);
1688 if (context_audio_stream) {
1689 encode_audio(audio, &audio_queue_file, audio_pts, context_audio_file, resampler_audio_file, { file_mux.get() });
1690 encode_audio(audio, &audio_queue_stream, audio_pts, context_audio_stream, resampler_audio_stream, { stream_mux });
1692 encode_audio(audio, &audio_queue_file, audio_pts, context_audio_file, resampler_audio_file, { stream_mux, file_mux.get() });
1694 last_audio_pts = audio_pts + audio.size() * TIMEBASE / (OUTPUT_FREQUENCY * 2);
1696 if (audio_pts == task.pts) break;
1700 void QuickSyncEncoderImpl::encode_audio(
1701 const vector<float> &audio,
1702 vector<float> *audio_queue,
1704 AVCodecContext *ctx,
1705 AVAudioResampleContext *resampler,
1706 const vector<Mux *> &muxes)
1708 if (ctx->frame_size == 0) {
1709 // No queueing needed.
1710 assert(audio_queue->empty());
1711 assert(audio.size() % 2 == 0);
1712 encode_audio_one_frame(&audio[0], audio.size() / 2, audio_pts, ctx, resampler, muxes);
1716 int64_t sample_offset = audio_queue->size();
1718 audio_queue->insert(audio_queue->end(), audio.begin(), audio.end());
1720 for (sample_num = 0;
1721 sample_num + ctx->frame_size * 2 <= audio_queue->size();
1722 sample_num += ctx->frame_size * 2) {
1723 int64_t adjusted_audio_pts = audio_pts + (int64_t(sample_num) - sample_offset) * TIMEBASE / (OUTPUT_FREQUENCY * 2);
1724 encode_audio_one_frame(&(*audio_queue)[sample_num],
1731 audio_queue->erase(audio_queue->begin(), audio_queue->begin() + sample_num);
1734 void QuickSyncEncoderImpl::encode_audio_one_frame(
1738 AVCodecContext *ctx,
1739 AVAudioResampleContext *resampler,
1740 const vector<Mux *> &muxes)
1742 audio_frame->pts = audio_pts + global_delay();
1743 audio_frame->nb_samples = num_samples;
1744 audio_frame->channel_layout = AV_CH_LAYOUT_STEREO;
1745 audio_frame->format = ctx->sample_fmt;
1746 audio_frame->sample_rate = OUTPUT_FREQUENCY;
1748 if (av_samples_alloc(audio_frame->data, nullptr, 2, num_samples, ctx->sample_fmt, 0) < 0) {
1749 fprintf(stderr, "Could not allocate %ld samples.\n", num_samples);
1753 if (avresample_convert(resampler, audio_frame->data, 0, num_samples,
1754 (uint8_t **)&audio, 0, num_samples) < 0) {
1755 fprintf(stderr, "Audio conversion failed.\n");
1760 av_init_packet(&pkt);
1764 avcodec_encode_audio2(ctx, &pkt, audio_frame, &got_output);
1766 pkt.stream_index = 1;
1768 for (Mux *mux : muxes) {
1769 mux->add_packet(pkt, pkt.pts, pkt.dts);
1773 av_freep(&audio_frame->data[0]);
1775 av_frame_unref(audio_frame);
1776 av_free_packet(&pkt);
1779 void QuickSyncEncoderImpl::encode_last_audio(
1780 vector<float> *audio_queue,
1782 AVCodecContext *ctx,
1783 AVAudioResampleContext *resampler,
1784 const vector<Mux *> &muxes)
1786 if (!audio_queue->empty()) {
1787 // Last frame can be whatever size we want.
1788 assert(audio_queue->size() % 2 == 0);
1789 encode_audio_one_frame(&(*audio_queue)[0], audio_queue->size() / 2, audio_pts, ctx, resampler, muxes);
1790 audio_queue->clear();
1793 if (ctx->codec->capabilities & AV_CODEC_CAP_DELAY) {
1794 // Collect any delayed frames.
1798 av_init_packet(&pkt);
1801 avcodec_encode_audio2(ctx, &pkt, nullptr, &got_output);
1802 if (!got_output) break;
1804 pkt.stream_index = 1;
1806 for (Mux *mux : muxes) {
1807 mux->add_packet(pkt, pkt.pts, pkt.dts);
1809 av_free_packet(&pkt);
1814 // this is weird. but it seems to put a new frame onto the queue
1815 void QuickSyncEncoderImpl::storage_task_enqueue(storage_task task)
1817 unique_lock<mutex> lock(storage_task_queue_mutex);
1818 storage_task_queue.push(move(task));
1819 storage_task_queue_changed.notify_all();
1822 void QuickSyncEncoderImpl::storage_task_thread()
1825 storage_task current;
1827 // wait until there's an encoded frame
1828 unique_lock<mutex> lock(storage_task_queue_mutex);
1829 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || !storage_task_queue.empty(); });
1830 if (storage_thread_should_quit && storage_task_queue.empty()) return;
1831 current = move(storage_task_queue.front());
1832 storage_task_queue.pop();
1837 // waits for data, then saves it to disk.
1838 va_status = vaSyncSurface(va_dpy, gl_surfaces[current.display_order % SURFACE_NUM].src_surface);
1839 CHECK_VASTATUS(va_status, "vaSyncSurface");
1840 save_codeddata(move(current));
1843 unique_lock<mutex> lock(storage_task_queue_mutex);
1844 srcsurface_status[current.display_order % SURFACE_NUM] = SRC_SURFACE_FREE;
1845 storage_task_queue_changed.notify_all();
1850 int QuickSyncEncoderImpl::release_encode()
1852 for (unsigned i = 0; i < SURFACE_NUM; i++) {
1853 vaDestroyBuffer(va_dpy, gl_surfaces[i].coded_buf);
1854 vaDestroySurfaces(va_dpy, &gl_surfaces[i].src_surface, 1);
1855 vaDestroySurfaces(va_dpy, &gl_surfaces[i].ref_surface, 1);
1857 if (!use_zerocopy) {
1858 glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
1859 glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
1860 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
1861 glDeleteBuffers(1, &gl_surfaces[i].pbo);
1863 glDeleteTextures(1, &gl_surfaces[i].y_tex);
1864 glDeleteTextures(1, &gl_surfaces[i].cbcr_tex);
1867 vaDestroyContext(va_dpy, context_id);
1868 vaDestroyConfig(va_dpy, config_id);
1873 int QuickSyncEncoderImpl::deinit_va()
1875 vaTerminate(va_dpy);
1877 va_close_display(va_dpy);
1884 void init_audio_encoder(const string &codec_name, int bit_rate, AVCodecContext **ctx, AVAudioResampleContext **resampler)
1886 AVCodec *codec_audio = avcodec_find_encoder_by_name(codec_name.c_str());
1887 if (codec_audio == nullptr) {
1888 fprintf(stderr, "ERROR: Could not find codec '%s'\n", codec_name.c_str());
1892 AVCodecContext *context_audio = avcodec_alloc_context3(codec_audio);
1893 context_audio->bit_rate = bit_rate;
1894 context_audio->sample_rate = OUTPUT_FREQUENCY;
1895 context_audio->sample_fmt = codec_audio->sample_fmts[0];
1896 context_audio->channels = 2;
1897 context_audio->channel_layout = AV_CH_LAYOUT_STEREO;
1898 context_audio->time_base = AVRational{1, TIMEBASE};
1899 context_audio->flags |= CODEC_FLAG_GLOBAL_HEADER;
1900 if (avcodec_open2(context_audio, codec_audio, NULL) < 0) {
1901 fprintf(stderr, "Could not open codec '%s'\n", codec_name.c_str());
1905 *ctx = context_audio;
1907 *resampler = avresample_alloc_context();
1908 if (*resampler == nullptr) {
1909 fprintf(stderr, "Allocating resampler failed.\n");
1913 av_opt_set_int(*resampler, "in_channel_layout", AV_CH_LAYOUT_STEREO, 0);
1914 av_opt_set_int(*resampler, "out_channel_layout", AV_CH_LAYOUT_STEREO, 0);
1915 av_opt_set_int(*resampler, "in_sample_rate", OUTPUT_FREQUENCY, 0);
1916 av_opt_set_int(*resampler, "out_sample_rate", OUTPUT_FREQUENCY, 0);
1917 av_opt_set_int(*resampler, "in_sample_fmt", AV_SAMPLE_FMT_FLT, 0);
1918 av_opt_set_int(*resampler, "out_sample_fmt", context_audio->sample_fmt, 0);
1920 if (avresample_open(*resampler) < 0) {
1921 fprintf(stderr, "Could not open resample context.\n");
1928 QuickSyncEncoderImpl::QuickSyncEncoderImpl(QSurface *surface, const string &va_display, int width, int height, Mux *stream_mux)
1929 : current_storage_frame(0), surface(surface), stream_mux(stream_mux), frame_width(width), frame_height(height)
1931 init_audio_encoder(AUDIO_OUTPUT_CODEC_NAME, DEFAULT_AUDIO_OUTPUT_BIT_RATE, &context_audio_file, &resampler_audio_file);
1933 if (!global_flags.stream_audio_codec_name.empty()) {
1934 init_audio_encoder(global_flags.stream_audio_codec_name,
1935 global_flags.stream_audio_codec_bitrate, &context_audio_stream, &resampler_audio_stream);
1938 frame_width_mbaligned = (frame_width + 15) & (~15);
1939 frame_height_mbaligned = (frame_height + 15) & (~15);
1941 audio_frame = av_frame_alloc();
1945 if (global_flags.uncompressed_video_to_http ||
1946 global_flags.x264_video_to_http) {
1947 reorderer.reset(new FrameReorderer(ip_period - 1, frame_width, frame_height));
1949 if (global_flags.x264_video_to_http) {
1950 x264_encoder.reset(new X264Encoder(stream_mux));
1953 init_va(va_display);
1956 // No frames are ready yet.
1957 memset(srcsurface_status, SRC_SURFACE_FREE, sizeof(srcsurface_status));
1959 memset(&seq_param, 0, sizeof(seq_param));
1960 memset(&pic_param, 0, sizeof(pic_param));
1961 memset(&slice_param, 0, sizeof(slice_param));
1963 storage_thread = thread(&QuickSyncEncoderImpl::storage_task_thread, this);
1965 encode_thread = thread([this]{
1966 //SDL_GL_MakeCurrent(window, context);
1967 QOpenGLContext *context = create_context(this->surface);
1968 eglBindAPI(EGL_OPENGL_API);
1969 if (!make_current(context, this->surface)) {
1970 printf("display=%p surface=%p context=%p curr=%p err=%d\n", eglGetCurrentDisplay(), this->surface, context, eglGetCurrentContext(),
1974 encode_thread_func();
1978 QuickSyncEncoderImpl::~QuickSyncEncoderImpl()
1981 av_frame_free(&audio_frame);
1982 avresample_free(&resampler_audio_file);
1983 avresample_free(&resampler_audio_stream);
1984 avcodec_free_context(&context_audio_file);
1985 avcodec_free_context(&context_audio_stream);
1988 bool QuickSyncEncoderImpl::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
1990 assert(!is_shutdown);
1992 // Wait until this frame slot is done encoding.
1993 unique_lock<mutex> lock(storage_task_queue_mutex);
1994 if (srcsurface_status[current_storage_frame % SURFACE_NUM] != SRC_SURFACE_FREE) {
1995 fprintf(stderr, "Warning: Slot %d (for frame %d) is still encoding, rendering has to wait for H.264 encoder\n",
1996 current_storage_frame % SURFACE_NUM, current_storage_frame);
1998 storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || (srcsurface_status[current_storage_frame % SURFACE_NUM] == SRC_SURFACE_FREE); });
1999 srcsurface_status[current_storage_frame % SURFACE_NUM] = SRC_SURFACE_IN_ENCODING;
2000 if (storage_thread_should_quit) return false;
2003 //*fbo = fbos[current_storage_frame % SURFACE_NUM];
2004 GLSurface *surf = &gl_surfaces[current_storage_frame % SURFACE_NUM];
2005 *y_tex = surf->y_tex;
2006 *cbcr_tex = surf->cbcr_tex;
2008 VAStatus va_status = vaDeriveImage(va_dpy, surf->src_surface, &surf->surface_image);
2009 CHECK_VASTATUS(va_status, "vaDeriveImage");
2012 VABufferInfo buf_info;
2013 buf_info.mem_type = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME; // or VA_SURFACE_ATTRIB_MEM_TYPE_KERNEL_DRM?
2014 va_status = vaAcquireBufferHandle(va_dpy, surf->surface_image.buf, &buf_info);
2015 CHECK_VASTATUS(va_status, "vaAcquireBufferHandle");
2018 surf->y_egl_image = EGL_NO_IMAGE_KHR;
2019 EGLint y_attribs[] = {
2020 EGL_WIDTH, frame_width,
2021 EGL_HEIGHT, frame_height,
2022 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('R', '8', ' ', ' '),
2023 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
2024 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[0]),
2025 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[0]),
2029 surf->y_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, y_attribs);
2030 assert(surf->y_egl_image != EGL_NO_IMAGE_KHR);
2032 // Associate Y image to a texture.
2033 glBindTexture(GL_TEXTURE_2D, *y_tex);
2034 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->y_egl_image);
2036 // Create CbCr image.
2037 surf->cbcr_egl_image = EGL_NO_IMAGE_KHR;
2038 EGLint cbcr_attribs[] = {
2039 EGL_WIDTH, frame_width,
2040 EGL_HEIGHT, frame_height,
2041 EGL_LINUX_DRM_FOURCC_EXT, fourcc_code('G', 'R', '8', '8'),
2042 EGL_DMA_BUF_PLANE0_FD_EXT, EGLint(buf_info.handle),
2043 EGL_DMA_BUF_PLANE0_OFFSET_EXT, EGLint(surf->surface_image.offsets[1]),
2044 EGL_DMA_BUF_PLANE0_PITCH_EXT, EGLint(surf->surface_image.pitches[1]),
2048 surf->cbcr_egl_image = eglCreateImageKHR(eglGetCurrentDisplay(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, NULL, cbcr_attribs);
2049 assert(surf->cbcr_egl_image != EGL_NO_IMAGE_KHR);
2051 // Associate CbCr image to a texture.
2052 glBindTexture(GL_TEXTURE_2D, *cbcr_tex);
2053 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, surf->cbcr_egl_image);
2059 void QuickSyncEncoderImpl::add_audio(int64_t pts, vector<float> audio)
2061 assert(!is_shutdown);
2063 unique_lock<mutex> lock(frame_queue_mutex);
2064 pending_audio_frames[pts] = move(audio);
2066 frame_queue_nonempty.notify_all();
2069 RefCountedGLsync QuickSyncEncoderImpl::end_frame(int64_t pts, int64_t duration, const vector<RefCountedFrame> &input_frames)
2071 assert(!is_shutdown);
2073 if (!use_zerocopy) {
2074 GLSurface *surf = &gl_surfaces[current_storage_frame % SURFACE_NUM];
2076 glPixelStorei(GL_PACK_ROW_LENGTH, 0);
2079 glBindBuffer(GL_PIXEL_PACK_BUFFER, surf->pbo);
2082 glBindTexture(GL_TEXTURE_2D, surf->y_tex);
2084 glGetTexImage(GL_TEXTURE_2D, 0, GL_RED, GL_UNSIGNED_BYTE, BUFFER_OFFSET(surf->y_offset));
2087 glBindTexture(GL_TEXTURE_2D, surf->cbcr_tex);
2089 glGetTexImage(GL_TEXTURE_2D, 0, GL_RG, GL_UNSIGNED_BYTE, BUFFER_OFFSET(surf->cbcr_offset));
2092 glBindTexture(GL_TEXTURE_2D, 0);
2094 glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
2097 glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT | GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
2101 RefCountedGLsync fence = RefCountedGLsync(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
2103 glFlush(); // Make the H.264 thread see the fence as soon as possible.
2107 unique_lock<mutex> lock(frame_queue_mutex);
2108 pending_video_frames[current_storage_frame] = PendingFrame{ fence, input_frames, pts, duration };
2109 ++current_storage_frame;
2111 frame_queue_nonempty.notify_all();
2115 void QuickSyncEncoderImpl::shutdown()
2122 unique_lock<mutex> lock(frame_queue_mutex);
2123 encode_thread_should_quit = true;
2124 frame_queue_nonempty.notify_all();
2126 encode_thread.join();
2127 x264_encoder.reset();
2129 unique_lock<mutex> lock(storage_task_queue_mutex);
2130 storage_thread_should_quit = true;
2131 frame_queue_nonempty.notify_all();
2132 storage_task_queue_changed.notify_all();
2134 storage_thread.join();
2135 encode_remaining_audio();
2142 void QuickSyncEncoderImpl::open_output_file(const std::string &filename)
2144 AVFormatContext *avctx = avformat_alloc_context();
2145 avctx->oformat = av_guess_format(NULL, filename.c_str(), NULL);
2146 assert(filename.size() < sizeof(avctx->filename) - 1);
2147 strcpy(avctx->filename, filename.c_str());
2149 string url = "file:" + filename;
2150 int ret = avio_open2(&avctx->pb, url.c_str(), AVIO_FLAG_WRITE, &avctx->interrupt_callback, NULL);
2152 char tmp[AV_ERROR_MAX_STRING_SIZE];
2153 fprintf(stderr, "%s: avio_open2() failed: %s\n", filename.c_str(), av_make_error_string(tmp, sizeof(tmp), ret));
2157 file_mux.reset(new Mux(avctx, frame_width, frame_height, Mux::CODEC_H264, context_audio_file->codec, TIMEBASE, DEFAULT_AUDIO_OUTPUT_BIT_RATE, nullptr));
2160 void QuickSyncEncoderImpl::close_output_file()
2165 void QuickSyncEncoderImpl::encode_thread_func()
2167 int64_t last_dts = -1;
2168 int gop_start_display_frame_num = 0;
2169 for (int encoding_frame_num = 0; ; ++encoding_frame_num) {
2172 int frame_type, display_frame_num;
2173 encoding2display_order(encoding_frame_num, intra_period, intra_idr_period, ip_period,
2174 &display_frame_num, &frame_type, &pts_lag);
2175 if (frame_type == FRAME_IDR) {
2177 current_frame_num = 0;
2178 gop_start_display_frame_num = display_frame_num;
2182 unique_lock<mutex> lock(frame_queue_mutex);
2183 frame_queue_nonempty.wait(lock, [this, display_frame_num]{
2184 return encode_thread_should_quit || pending_video_frames.count(display_frame_num) != 0;
2186 if (encode_thread_should_quit && pending_video_frames.count(display_frame_num) == 0) {
2187 // We have queued frames that were supposed to be B-frames,
2188 // but will be no P-frame to encode them against. Encode them all
2189 // as P-frames instead. Note that this happens under the mutex,
2190 // but nobody else uses it at this point, since we're shutting down,
2191 // so there's no contention.
2192 encode_remaining_frames_as_p(encoding_frame_num, gop_start_display_frame_num, last_dts);
2195 frame = move(pending_video_frames[display_frame_num]);
2196 pending_video_frames.erase(display_frame_num);
2200 // Determine the dts of this frame.
2202 if (pts_lag == -1) {
2203 assert(last_dts != -1);
2204 dts = last_dts + (TIMEBASE / MAX_FPS);
2206 dts = frame.pts - pts_lag;
2210 encode_frame(frame, encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type, frame.pts, dts, frame.duration);
2214 void QuickSyncEncoderImpl::encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts)
2216 if (pending_video_frames.empty()) {
2220 for (auto &pending_frame : pending_video_frames) {
2221 int display_frame_num = pending_frame.first;
2222 assert(display_frame_num > 0);
2223 PendingFrame frame = move(pending_frame.second);
2224 int64_t dts = last_dts + (TIMEBASE / MAX_FPS);
2225 printf("Finalizing encode: Encoding leftover frame %d as P-frame instead of B-frame.\n", display_frame_num);
2226 encode_frame(frame, encoding_frame_num++, display_frame_num, gop_start_display_frame_num, FRAME_P, frame.pts, dts, frame.duration);
2230 if (global_flags.uncompressed_video_to_http ||
2231 global_flags.x264_video_to_http) {
2232 // Add frames left in reorderer.
2233 while (!reorderer->empty()) {
2234 FrameReorderer::Frame output_frame = reorderer->get_first_frame();
2235 if (global_flags.uncompressed_video_to_http) {
2236 add_packet_for_uncompressed_frame(output_frame.pts, output_frame.duration, output_frame.data);
2238 assert(global_flags.x264_video_to_http);
2239 x264_encoder->add_frame(output_frame.pts, output_frame.duration, output_frame.data);
2245 void QuickSyncEncoderImpl::encode_remaining_audio()
2247 // This really ought to be empty by now, but just to be sure...
2248 for (auto &pending_frame : pending_audio_frames) {
2249 int64_t audio_pts = pending_frame.first;
2250 vector<float> audio = move(pending_frame.second);
2252 if (context_audio_stream) {
2253 encode_audio(audio, &audio_queue_file, audio_pts, context_audio_file, resampler_audio_file, { file_mux.get() });
2254 encode_audio(audio, &audio_queue_stream, audio_pts, context_audio_stream, resampler_audio_stream, { stream_mux });
2256 encode_audio(audio, &audio_queue_file, audio_pts, context_audio_file, resampler_audio_file, { stream_mux, file_mux.get() });
2258 last_audio_pts = audio_pts + audio.size() * TIMEBASE / (OUTPUT_FREQUENCY * 2);
2260 pending_audio_frames.clear();
2262 // Encode any leftover audio in the queues, and also any delayed frames.
2263 if (context_audio_stream) {
2264 encode_last_audio(&audio_queue_file, last_audio_pts, context_audio_file, resampler_audio_file, { file_mux.get() });
2265 encode_last_audio(&audio_queue_stream, last_audio_pts, context_audio_stream, resampler_audio_stream, { stream_mux });
2267 encode_last_audio(&audio_queue_file, last_audio_pts, context_audio_file, resampler_audio_file, { stream_mux, file_mux.get() });
2271 void QuickSyncEncoderImpl::add_packet_for_uncompressed_frame(int64_t pts, int64_t duration, const uint8_t *data)
2274 memset(&pkt, 0, sizeof(pkt));
2276 pkt.data = const_cast<uint8_t *>(data);
2277 pkt.size = frame_width * frame_height * 2;
2278 pkt.stream_index = 0;
2279 pkt.flags = AV_PKT_FLAG_KEY;
2280 pkt.duration = duration;
2281 stream_mux->add_packet(pkt, pts, pts);
2286 void memcpy_with_pitch(uint8_t *dst, const uint8_t *src, size_t src_width, size_t dst_pitch, size_t height)
2288 if (src_width == dst_pitch) {
2289 memcpy(dst, src, src_width * height);
2291 for (size_t y = 0; y < height; ++y) {
2292 const uint8_t *sptr = src + y * src_width;
2293 uint8_t *dptr = dst + y * dst_pitch;
2294 memcpy(dptr, sptr, src_width);
2301 void QuickSyncEncoderImpl::encode_frame(QuickSyncEncoderImpl::PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
2302 int frame_type, int64_t pts, int64_t dts, int64_t duration)
2304 // Wait for the GPU to be done with the frame.
2307 sync_status = glClientWaitSync(frame.fence.get(), 0, 1000000000);
2309 } while (sync_status == GL_TIMEOUT_EXPIRED);
2310 assert(sync_status != GL_WAIT_FAILED);
2312 // Release back any input frames we needed to render this frame.
2313 frame.input_frames.clear();
2315 GLSurface *surf = &gl_surfaces[display_frame_num % SURFACE_NUM];
2319 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->y_egl_image);
2320 eglDestroyImageKHR(eglGetCurrentDisplay(), surf->cbcr_egl_image);
2321 va_status = vaReleaseBufferHandle(va_dpy, surf->surface_image.buf);
2322 CHECK_VASTATUS(va_status, "vaReleaseBufferHandle");
2324 unsigned char *surface_p = nullptr;
2325 vaMapBuffer(va_dpy, surf->surface_image.buf, (void **)&surface_p);
2327 unsigned char *va_y_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[0];
2328 memcpy_with_pitch(va_y_ptr, surf->y_ptr, frame_width, surf->surface_image.pitches[0], frame_height);
2330 unsigned char *va_cbcr_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[1];
2331 memcpy_with_pitch(va_cbcr_ptr, surf->cbcr_ptr, (frame_width / 2) * sizeof(uint16_t), surf->surface_image.pitches[1], frame_height / 2);
2333 va_status = vaUnmapBuffer(va_dpy, surf->surface_image.buf);
2334 CHECK_VASTATUS(va_status, "vaUnmapBuffer");
2336 if (global_flags.uncompressed_video_to_http ||
2337 global_flags.x264_video_to_http) {
2338 // Add uncompressed video. (Note that pts == dts here.)
2339 // Delay needs to match audio.
2340 FrameReorderer::Frame output_frame = reorderer->reorder_frame(pts + global_delay(), duration, reinterpret_cast<uint8_t *>(surf->y_ptr));
2341 if (output_frame.data != nullptr) {
2342 if (global_flags.uncompressed_video_to_http) {
2343 add_packet_for_uncompressed_frame(output_frame.pts, output_frame.duration, output_frame.data);
2345 assert(global_flags.x264_video_to_http);
2346 x264_encoder->add_frame(output_frame.pts, output_frame.duration, output_frame.data);
2352 va_status = vaDestroyImage(va_dpy, surf->surface_image.image_id);
2353 CHECK_VASTATUS(va_status, "vaDestroyImage");
2355 // Schedule the frame for encoding.
2356 VASurfaceID va_surface = surf->src_surface;
2357 va_status = vaBeginPicture(va_dpy, context_id, va_surface);
2358 CHECK_VASTATUS(va_status, "vaBeginPicture");
2360 if (frame_type == FRAME_IDR) {
2362 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
2363 if (h264_packedheader) {
2364 render_packedsequence();
2365 render_packedpicture();
2368 //render_sequence();
2369 render_picture(frame_type, display_frame_num, gop_start_display_frame_num);
2371 render_slice(encoding_frame_num, display_frame_num, gop_start_display_frame_num, frame_type);
2373 va_status = vaEndPicture(va_dpy, context_id);
2374 CHECK_VASTATUS(va_status, "vaEndPicture");
2376 // so now the data is done encoding (well, async job kicked off)...
2377 // we send that to the storage thread
2379 tmp.display_order = display_frame_num;
2380 tmp.frame_type = frame_type;
2383 tmp.duration = duration;
2384 storage_task_enqueue(move(tmp));
2386 update_ReferenceFrames(frame_type);
2390 QuickSyncEncoder::QuickSyncEncoder(QSurface *surface, const string &va_display, int width, int height, Mux *stream_mux)
2391 : impl(new QuickSyncEncoderImpl(surface, va_display, width, height, stream_mux)) {}
2393 // Must be defined here because unique_ptr<> destructor needs to know the impl.
2394 QuickSyncEncoder::~QuickSyncEncoder() {}
2396 void QuickSyncEncoder::add_audio(int64_t pts, vector<float> audio)
2398 impl->add_audio(pts, audio);
2401 bool QuickSyncEncoder::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
2403 return impl->begin_frame(y_tex, cbcr_tex);
2406 RefCountedGLsync QuickSyncEncoder::end_frame(int64_t pts, int64_t duration, const vector<RefCountedFrame> &input_frames)
2408 return impl->end_frame(pts, duration, input_frames);
2411 void QuickSyncEncoder::shutdown()
2416 void QuickSyncEncoder::open_output_file(const std::string &filename)
2418 impl->open_output_file(filename);
2421 void QuickSyncEncoder::close_output_file()
2423 impl->close_output_file();