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"
20 #include "shared/timebase.h"
21 #include "print_latency.h"
22 #include "shared/ref_counted_gl_sync.h"
23 #include "shared/va_display.h"
24 #include "v4l_output.h"
26 #define SURFACE_NUM 16 /* 16 surfaces for source YUV */
27 #define MAX_NUM_REF1 16 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
28 #define MAX_NUM_REF2 32 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
33 int max_size_in_dword;
35 typedef struct __bitstream bitstream;
40 class DiskSpaceEstimator;
42 class VideoCodecInterface;
44 class QuickSyncEncoderImpl {
46 QuickSyncEncoderImpl(const std::string &filename, movit::ResourcePool *resource_pool, QSurface *surface, const std::string &va_display, int width, int height, const AVOutputFormat *oformat, VideoCodecInterface *http_encoder, VideoCodecInterface *disk_encoder, DiskSpaceEstimator *disk_space_estimator);
47 ~QuickSyncEncoderImpl();
48 void add_audio(int64_t pts, std::vector<float> audio);
49 bool is_zerocopy() const;
50 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);
51 RefCountedGLsync end_frame();
54 void release_gl_resources();
55 void set_http_mux(Mux *mux)
60 // So we never get negative dts.
61 int64_t global_delay() const {
62 return int64_t(ip_period - 1) * (TIMEBASE / TYPICAL_FPS);
67 unsigned long long display_order;
69 std::vector<float> audio;
70 int64_t pts, dts, duration;
71 movit::YCbCrLumaCoefficients ycbcr_coefficients;
72 ReceivedTimestamps received_ts;
73 std::vector<size_t> ref_display_frame_numbers;
76 RefCountedGLsync fence;
77 std::vector<RefCountedFrame> input_frames;
78 int64_t pts, duration;
79 movit::YCbCrLumaCoefficients ycbcr_coefficients;
82 // Only if x264_video_to_disk == false.
83 VASurfaceID src_surface, ref_surface;
85 VAImage surface_image;
87 // Only if use_zerocopy == true (which implies x264_video_to_disk == false).
88 GLuint y_tex, cbcr_tex;
89 EGLImage y_egl_image, cbcr_egl_image;
91 // Only if use_zerocopy == false.
93 uint8_t *y_ptr, *cbcr_ptr;
94 size_t y_offset, cbcr_offset;
96 // Surfaces can be busy (have refcount > 0) for a variety of
97 // reasons: First of all because they belong to a frame that's
98 // under encoding. But also reference frames take refcounts;
99 // while a frame is being encoded, all its reference frames
100 // also have increased refcounts so that they are not dropped.
101 // Similarly, just being in <reference_frames> increases the
102 // refcount. Until it is back to zero, the surface cannot be given
103 // out for encoding another frame. Use release_gl_surface()
104 // to reduce the refcount, which will free the surface if
105 // the refcount reaches zero.
107 // Protected by storage_task_queue_mutex.
111 void open_output_file(const std::string &filename);
112 void encode_thread_func();
113 void encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts);
114 void pass_frame(PendingFrame frame, int display_frame_num, int64_t pts, int64_t duration);
115 void encode_frame(PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
116 int frame_type, int64_t pts, int64_t dts, int64_t duration, movit::YCbCrLumaCoefficients ycbcr_coefficients);
117 void storage_task_thread();
118 void storage_task_enqueue(storage_task task);
119 void save_codeddata(GLSurface *surf, storage_task task);
120 int render_packedsequence(movit::YCbCrLumaCoefficients ycbcr_coefficients);
121 int render_packedpicture();
122 void render_packedslice();
123 int render_sequence();
124 int render_picture(GLSurface *surf, int frame_type, int display_frame_num, int gop_start_display_frame_num);
125 void sps_rbsp(movit::YCbCrLumaCoefficients ycbcr_coefficients, bitstream *bs);
126 void pps_rbsp(bitstream *bs);
127 int build_packed_pic_buffer(unsigned char **header_buffer);
128 int render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type);
129 void slice_header(bitstream *bs);
130 int build_packed_seq_buffer(movit::YCbCrLumaCoefficients ycbcr_coefficients, unsigned char **header_buffer);
131 int build_packed_slice_buffer(unsigned char **header_buffer);
132 int init_va(const std::string &va_display);
133 void enable_zerocopy_if_possible();
135 void release_encode();
136 void update_ReferenceFrames(int current_display_frame, int frame_type);
137 void update_RefPicList_P(VAPictureH264 RefPicList0_P[MAX_NUM_REF2]);
138 void update_RefPicList_B(VAPictureH264 RefPicList0_B[MAX_NUM_REF2], VAPictureH264 RefPicList1_B[MAX_NUM_REF2]);
139 GLSurface *allocate_gl_surface();
140 void release_gl_surface(size_t display_frame_num);
142 bool is_shutdown = false;
143 bool has_released_gl_resources = false;
144 std::atomic<bool> use_zerocopy{false};
146 std::thread encode_thread, storage_thread;
148 std::mutex storage_task_queue_mutex;
149 std::condition_variable storage_task_queue_changed;
150 std::queue<storage_task> storage_task_queue; // protected by storage_task_queue_mutex
151 bool storage_thread_should_quit = false; // protected by storage_task_queue_mutex
153 std::mutex frame_queue_mutex;
154 std::condition_variable frame_queue_nonempty;
155 bool encode_thread_should_quit = false; // under frame_queue_mutex
157 int current_storage_frame;
159 PendingFrame current_video_frame; // Used only between begin_frame() and end_frame().
160 std::queue<PendingFrame> pending_video_frames; // under frame_queue_mutex
161 movit::ResourcePool *resource_pool;
164 // Frames that are done rendering and passed on to x264 (if enabled),
165 // but have not been encoded by Quick Sync yet, and thus also not freed.
166 // The key is the display frame number.
167 std::map<int, PendingFrame> reorder_buffer;
168 int quicksync_encoding_frame_num = 0;
170 std::mutex file_audio_encoder_mutex;
171 std::unique_ptr<AudioEncoder> file_audio_encoder;
173 VideoCodecInterface *http_encoder; // nullptr if not using x264/SVT-AV1.
174 VideoCodecInterface *disk_encoder;
175 std::unique_ptr<V4LOutput> v4l_output; // nullptr if not using V4L2 output.
177 Mux* http_mux = nullptr; // To the HTTP server.
178 std::unique_ptr<Mux> file_mux; // To local disk.
180 // Encoder parameters
181 std::unique_ptr<VADisplayWithCleanup> va_dpy;
182 VAProfile h264_profile = (VAProfile)~0;
183 VAConfigAttrib config_attrib[VAConfigAttribTypeMax];
184 int config_attrib_num = 0, enc_packed_header_idx;
186 GLSurface gl_surfaces[SURFACE_NUM];
188 // For all frames in encoding (refcount > 0), a pointer into gl_surfaces
189 // for the surface used for that frame. Protected by storage_task_queue_mutex.
190 // The key is display frame number.
191 std::unordered_map<size_t, GLSurface *> surface_for_frame;
193 VAConfigID config_id;
194 VAContextID context_id;
195 VAEncSequenceParameterBufferH264 seq_param;
196 VAEncPictureParameterBufferH264 pic_param;
197 VAEncSliceParameterBufferH264 slice_param;
198 VAPictureH264 CurrentCurrPic;
200 struct ReferenceFrame {
202 int display_number; // To track reference counts.
204 std::deque<ReferenceFrame> reference_frames;
206 // Static quality settings.
207 static constexpr unsigned int frame_bitrate = 15000000 / 60; // Doesn't really matter; only initial_qp does.
208 static constexpr unsigned int num_ref_frames = 2;
209 static constexpr int initial_qp = 15;
210 static constexpr int minimal_qp = 0;
211 static constexpr int intra_period = 30;
212 static constexpr int intra_idr_period = TYPICAL_FPS; // About a second; more at lower frame rates. Not ideal.
214 // Quality settings that are meant to be static, but might be overridden
216 int constraint_set_flag = 0;
217 int h264_packedheader = 0; /* support pack header? */
218 int h264_maxref = (1<<16|1);
219 int h264_entropy_mode = 1; /* cabac */
222 unsigned int current_ref_frame_num = 0; // Encoding frame order within this GOP, sans B-frames.
226 int frame_width_mbaligned;
227 int frame_height_mbaligned;
229 DiskSpaceEstimator *disk_space_estimator;
232 #endif // !defined(_QUICKSYNC_ENCODER_IMPL_H)