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 is_zerocopy() const;
40 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);
41 RefCountedGLsync end_frame();
44 void release_gl_resources();
45 void set_stream_mux(Mux *mux)
50 // So we never get negative dts.
51 int64_t global_delay() const {
52 return int64_t(ip_period - 1) * (TIMEBASE / MAX_FPS);
57 unsigned long long display_order;
59 std::vector<float> audio;
60 int64_t pts, dts, duration;
61 movit::YCbCrLumaCoefficients ycbcr_coefficients;
62 ReceivedTimestamps received_ts;
63 std::vector<size_t> ref_display_frame_numbers;
66 RefCountedGLsync fence;
67 std::vector<RefCountedFrame> input_frames;
68 int64_t pts, duration;
69 movit::YCbCrLumaCoefficients ycbcr_coefficients;
72 // Only if x264_video_to_disk == false.
73 VASurfaceID src_surface, ref_surface;
75 VAImage surface_image;
77 // Only if use_zerocopy == true (which implies x264_video_to_disk == false).
78 GLuint y_tex, cbcr_tex;
79 EGLImage y_egl_image, cbcr_egl_image;
81 // Only if use_zerocopy == false.
83 uint8_t *y_ptr, *cbcr_ptr;
84 size_t y_offset, cbcr_offset;
86 // Surfaces can be busy (have refcount > 0) for a variety of
87 // reasons: First of all because they belong to a frame that's
88 // under encoding. But also reference frames take refcounts;
89 // while a frame is being encoded, all its reference frames
90 // also have increased refcounts so that they are not dropped.
91 // Similarly, just being in <reference_frames> increases the
92 // refcount. Until it is back to zero, the surface cannot be given
93 // out for encoding another frame. Use release_gl_surface()
94 // to reduce the refcount, which will free the surface if
95 // the refcount reaches zero.
97 // Protected by storage_task_queue_mutex.
101 void open_output_file(const std::string &filename);
102 void encode_thread_func();
103 void encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts);
104 void add_packet_for_uncompressed_frame(int64_t pts, int64_t duration, const uint8_t *data);
105 void pass_frame(PendingFrame frame, int display_frame_num, int64_t pts, int64_t duration);
106 void encode_frame(PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
107 int frame_type, int64_t pts, int64_t dts, int64_t duration, movit::YCbCrLumaCoefficients ycbcr_coefficients);
108 void storage_task_thread();
109 void storage_task_enqueue(storage_task task);
110 void save_codeddata(GLSurface *surf, storage_task task);
111 int render_packedsequence(movit::YCbCrLumaCoefficients ycbcr_coefficients);
112 int render_packedpicture();
113 void render_packedslice();
114 int render_sequence();
115 int render_picture(GLSurface *surf, int frame_type, int display_frame_num, int gop_start_display_frame_num);
116 void sps_rbsp(movit::YCbCrLumaCoefficients ycbcr_coefficients, bitstream *bs);
117 void pps_rbsp(bitstream *bs);
118 int build_packed_pic_buffer(unsigned char **header_buffer);
119 int render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type);
120 void slice_header(bitstream *bs);
121 int build_packed_seq_buffer(movit::YCbCrLumaCoefficients ycbcr_coefficients, unsigned char **header_buffer);
122 int build_packed_slice_buffer(unsigned char **header_buffer);
123 int init_va(const std::string &va_display);
125 void enable_zerocopy_if_possible();
126 VADisplay va_open_display(const std::string &va_display);
127 void va_close_display(VADisplay va_dpy);
129 void release_encode();
130 void update_ReferenceFrames(int current_display_frame, int frame_type);
131 void update_RefPicList_P(VAPictureH264 RefPicList0_P[MAX_NUM_REF2]);
132 void update_RefPicList_B(VAPictureH264 RefPicList0_B[MAX_NUM_REF2], VAPictureH264 RefPicList1_B[MAX_NUM_REF2]);
133 GLSurface *allocate_gl_surface();
134 void release_gl_surface(size_t display_frame_num);
136 bool is_shutdown = false;
137 bool has_released_gl_resources = false;
141 std::thread encode_thread, storage_thread;
143 std::mutex storage_task_queue_mutex;
144 std::condition_variable storage_task_queue_changed;
145 std::queue<storage_task> storage_task_queue; // protected by storage_task_queue_mutex
146 bool storage_thread_should_quit = false; // protected by storage_task_queue_mutex
148 std::mutex frame_queue_mutex;
149 std::condition_variable frame_queue_nonempty;
150 bool encode_thread_should_quit = false; // under frame_queue_mutex
152 int current_storage_frame;
154 PendingFrame current_video_frame; // Used only between begin_frame() and end_frame().
155 std::queue<PendingFrame> pending_video_frames; // under frame_queue_mutex
156 movit::ResourcePool *resource_pool;
159 // Frames that are done rendering and passed on to x264 (if enabled),
160 // but have not been encoded by Quick Sync yet, and thus also not freed.
161 // The key is the display frame number.
162 std::map<int, PendingFrame> reorder_buffer;
163 int quicksync_encoding_frame_num = 0;
165 std::unique_ptr<AudioEncoder> file_audio_encoder;
167 X264Encoder *x264_encoder; // nullptr if not using x264.
169 Mux* stream_mux = nullptr; // To HTTP.
170 std::unique_ptr<Mux> file_mux; // To local disk.
172 Display *x11_display = nullptr;
174 // Encoder parameters
176 VAProfile h264_profile = (VAProfile)~0;
177 VAConfigAttrib config_attrib[VAConfigAttribTypeMax];
178 int config_attrib_num = 0, enc_packed_header_idx;
180 GLSurface gl_surfaces[SURFACE_NUM];
182 // For all frames in encoding (refcount > 0), a pointer into gl_surfaces
183 // for the surface used for that frame. Protected by storage_task_queue_mutex.
184 // The key is display frame number.
185 std::unordered_map<size_t, GLSurface *> surface_for_frame;
187 VAConfigID config_id;
188 VAContextID context_id;
189 VAEncSequenceParameterBufferH264 seq_param;
190 VAEncPictureParameterBufferH264 pic_param;
191 VAEncSliceParameterBufferH264 slice_param;
192 VAPictureH264 CurrentCurrPic;
194 struct ReferenceFrame {
196 int display_number; // To track reference counts.
198 std::deque<ReferenceFrame> reference_frames;
200 // Static quality settings.
201 static constexpr unsigned int frame_bitrate = 15000000 / 60; // Doesn't really matter; only initial_qp does.
202 static constexpr unsigned int num_ref_frames = 2;
203 static constexpr int initial_qp = 15;
204 static constexpr int minimal_qp = 0;
205 static constexpr int intra_period = 30;
206 static constexpr int intra_idr_period = MAX_FPS; // About a second; more at lower frame rates. Not ideal.
208 // Quality settings that are meant to be static, but might be overridden
210 int constraint_set_flag = 0;
211 int h264_packedheader = 0; /* support pack header? */
212 int h264_maxref = (1<<16|1);
213 int h264_entropy_mode = 1; /* cabac */
217 unsigned int current_ref_frame_num = 0; // Encoding frame order within this GOP, sans B-frames.
221 int frame_width_mbaligned;
222 int frame_height_mbaligned;
224 DiskSpaceEstimator *disk_space_estimator;
225 LatencyHistogram mixer_latency_histogram, qs_latency_histogram;
228 #endif // !defined(_QUICKSYNC_ENCODER_IMPL_H)