1 #ifndef _QUICKSYNC_ENCODER_IMPL_H
2 #define _QUICKSYNC_ENCODER_IMPL_H 1
5 #include <movit/image_format.h>
8 #include <condition_variable>
16 #include <unordered_map>
18 #include "audio_encoder.h"
21 #include "print_latency.h"
23 #define SURFACE_NUM 16 /* 16 surfaces for source YUV */
24 #define MAX_NUM_REF1 16 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
25 #define MAX_NUM_REF2 32 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
30 int max_size_in_dword;
32 typedef struct __bitstream bitstream;
34 class QuickSyncEncoderImpl {
36 QuickSyncEncoderImpl(const std::string &filename, movit::ResourcePool *resource_pool, QSurface *surface, const std::string &va_display, int width, int height, AVOutputFormat *oformat, X264Encoder *x264_encoder, DiskSpaceEstimator *disk_space_estimator);
37 ~QuickSyncEncoderImpl();
38 void add_audio(int64_t pts, std::vector<float> audio);
39 bool begin_frame(int64_t pts, int64_t duration, movit::YCbCrLumaCoefficients ycbcr_coefficients, const std::vector<RefCountedFrame> &input_frames, GLuint *y_tex, GLuint *cbcr_tex);
40 RefCountedGLsync end_frame();
42 void release_gl_resources();
43 void set_stream_mux(Mux *mux)
48 // So we never get negative dts.
49 int64_t global_delay() const {
50 return int64_t(ip_period - 1) * (TIMEBASE / MAX_FPS);
55 unsigned long long display_order;
57 std::vector<float> audio;
58 int64_t pts, dts, duration;
59 movit::YCbCrLumaCoefficients ycbcr_coefficients;
60 ReceivedTimestamps received_ts;
61 std::vector<size_t> ref_display_frame_numbers;
64 RefCountedGLsync fence;
65 std::vector<RefCountedFrame> input_frames;
66 int64_t pts, duration;
67 movit::YCbCrLumaCoefficients ycbcr_coefficients;
70 VASurfaceID src_surface, ref_surface;
73 VAImage surface_image;
74 GLuint y_tex, cbcr_tex;
76 // Only if use_zerocopy == true.
77 EGLImage y_egl_image, cbcr_egl_image;
79 // Only if use_zerocopy == false.
81 uint8_t *y_ptr, *cbcr_ptr;
82 size_t y_offset, cbcr_offset;
84 // Surfaces can be busy (have refcount > 0) for a variety of
85 // reasons: First of all because they belong to a frame that's
86 // under encoding. But also reference frames take refcounts;
87 // while a frame is being encoded, all its reference frames
88 // also have increased refcounts so that they are not dropped.
89 // Similarly, just being in <reference_frames> increases the
90 // refcount. Until it is back to zero, the surface cannot be given
91 // out for encoding another frame. Use release_gl_surface()
92 // to reduce the refcount, which will free the surface if
93 // the refcount reaches zero.
95 // Protected by storage_task_queue_mutex.
99 void open_output_file(const std::string &filename);
100 void encode_thread_func();
101 void encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts);
102 void add_packet_for_uncompressed_frame(int64_t pts, int64_t duration, const uint8_t *data);
103 void pass_frame(PendingFrame frame, int display_frame_num, int64_t pts, int64_t duration);
104 void encode_frame(PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
105 int frame_type, int64_t pts, int64_t dts, int64_t duration, movit::YCbCrLumaCoefficients ycbcr_coefficients);
106 void storage_task_thread();
107 void storage_task_enqueue(storage_task task);
108 void save_codeddata(GLSurface *surf, storage_task task);
109 int render_packedsequence(movit::YCbCrLumaCoefficients ycbcr_coefficients);
110 int render_packedpicture();
111 void render_packedslice();
112 int render_sequence();
113 int render_picture(GLSurface *surf, int frame_type, int display_frame_num, int gop_start_display_frame_num);
114 void sps_rbsp(movit::YCbCrLumaCoefficients ycbcr_coefficients, bitstream *bs);
115 void pps_rbsp(bitstream *bs);
116 int build_packed_pic_buffer(unsigned char **header_buffer);
117 int render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type);
118 void slice_header(bitstream *bs);
119 int build_packed_seq_buffer(movit::YCbCrLumaCoefficients ycbcr_coefficients, unsigned char **header_buffer);
120 int build_packed_slice_buffer(unsigned char **header_buffer);
121 int init_va(const std::string &va_display);
123 void enable_zerocopy_if_possible();
124 VADisplay va_open_display(const std::string &va_display);
125 void va_close_display(VADisplay va_dpy);
127 void release_encode();
128 void update_ReferenceFrames(int current_display_frame, int frame_type);
129 void update_RefPicList_P(VAPictureH264 RefPicList0_P[MAX_NUM_REF2]);
130 void update_RefPicList_B(VAPictureH264 RefPicList0_B[MAX_NUM_REF2], VAPictureH264 RefPicList1_B[MAX_NUM_REF2]);
131 GLSurface *allocate_gl_surface();
132 void release_gl_surface(size_t display_frame_num);
134 bool is_shutdown = false;
135 bool has_released_gl_resources = false;
139 std::thread encode_thread, storage_thread;
141 std::mutex storage_task_queue_mutex;
142 std::condition_variable storage_task_queue_changed;
143 std::queue<storage_task> storage_task_queue; // protected by storage_task_queue_mutex
144 bool storage_thread_should_quit = false; // protected by storage_task_queue_mutex
146 std::mutex frame_queue_mutex;
147 std::condition_variable frame_queue_nonempty;
148 bool encode_thread_should_quit = false; // under frame_queue_mutex
150 int current_storage_frame;
152 PendingFrame current_video_frame; // Used only between begin_frame() and end_frame().
153 std::queue<PendingFrame> pending_video_frames; // under frame_queue_mutex
154 movit::ResourcePool *resource_pool;
157 // Frames that are done rendering and passed on to x264 (if enabled),
158 // but have not been encoded by Quick Sync yet, and thus also not freed.
159 // The key is the display frame number.
160 std::map<int, PendingFrame> reorder_buffer;
161 int quicksync_encoding_frame_num = 0;
163 std::unique_ptr<AudioEncoder> file_audio_encoder;
165 X264Encoder *x264_encoder; // nullptr if not using x264.
167 Mux* stream_mux = nullptr; // To HTTP.
168 std::unique_ptr<Mux> file_mux; // To local disk.
170 Display *x11_display = nullptr;
172 // Encoder parameters
174 VAProfile h264_profile = (VAProfile)~0;
175 VAConfigAttrib config_attrib[VAConfigAttribTypeMax];
176 int config_attrib_num = 0, enc_packed_header_idx;
178 GLSurface gl_surfaces[SURFACE_NUM];
180 // For all frames in encoding (refcount > 0), a pointer into gl_surfaces
181 // for the surface used for that frame. Protected by storage_task_queue_mutex.
182 // The key is display frame number.
183 std::unordered_map<size_t, GLSurface *> surface_for_frame;
185 VAConfigID config_id;
186 VAContextID context_id;
187 VAEncSequenceParameterBufferH264 seq_param;
188 VAEncPictureParameterBufferH264 pic_param;
189 VAEncSliceParameterBufferH264 slice_param;
190 VAPictureH264 CurrentCurrPic;
192 struct ReferenceFrame {
194 int display_number; // To track reference counts.
196 std::deque<ReferenceFrame> reference_frames;
198 // Static quality settings.
199 static constexpr unsigned int frame_bitrate = 15000000 / 60; // Doesn't really matter; only initial_qp does.
200 static constexpr unsigned int num_ref_frames = 2;
201 static constexpr int initial_qp = 15;
202 static constexpr int minimal_qp = 0;
203 static constexpr int intra_period = 30;
204 static constexpr int intra_idr_period = MAX_FPS; // About a second; more at lower frame rates. Not ideal.
206 // Quality settings that are meant to be static, but might be overridden
208 int constraint_set_flag = 0;
209 int h264_packedheader = 0; /* support pack header? */
210 int h264_maxref = (1<<16|1);
211 int h264_entropy_mode = 1; /* cabac */
215 unsigned int current_ref_frame_num = 0; // Encoding frame order within this GOP, sans B-frames.
219 int frame_width_mbaligned;
220 int frame_height_mbaligned;
222 DiskSpaceEstimator *disk_space_estimator;
225 #endif // !defined(_QUICKSYNC_ENCODER_IMPL_H)