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)
59 void set_srt_mux(Mux *mux)
64 // So we never get negative dts.
65 int64_t global_delay() const {
66 return int64_t(ip_period - 1) * (TIMEBASE / TYPICAL_FPS);
71 unsigned long long display_order;
73 std::vector<float> audio;
74 int64_t pts, dts, duration;
75 movit::YCbCrLumaCoefficients ycbcr_coefficients;
76 ReceivedTimestamps received_ts;
77 std::vector<size_t> ref_display_frame_numbers;
80 RefCountedGLsync fence;
81 std::vector<RefCountedFrame> input_frames;
82 int64_t pts, duration;
83 movit::YCbCrLumaCoefficients ycbcr_coefficients;
86 // Only if x264_video_to_disk == false.
87 VASurfaceID src_surface, ref_surface;
89 VAImage surface_image;
91 // Only if use_zerocopy == true (which implies x264_video_to_disk == false).
92 GLuint y_tex, cbcr_tex;
93 EGLImage y_egl_image, cbcr_egl_image;
95 // Only if use_zerocopy == false.
97 uint8_t *y_ptr, *cbcr_ptr;
98 size_t y_offset, cbcr_offset;
100 // Surfaces can be busy (have refcount > 0) for a variety of
101 // reasons: First of all because they belong to a frame that's
102 // under encoding. But also reference frames take refcounts;
103 // while a frame is being encoded, all its reference frames
104 // also have increased refcounts so that they are not dropped.
105 // Similarly, just being in <reference_frames> increases the
106 // refcount. Until it is back to zero, the surface cannot be given
107 // out for encoding another frame. Use release_gl_surface()
108 // to reduce the refcount, which will free the surface if
109 // the refcount reaches zero.
111 // Protected by storage_task_queue_mutex.
115 void open_output_file(const std::string &filename);
116 void encode_thread_func();
117 void encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts);
118 void pass_frame(PendingFrame frame, int display_frame_num, int64_t pts, int64_t duration);
119 void encode_frame(PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
120 int frame_type, int64_t pts, int64_t dts, int64_t duration, movit::YCbCrLumaCoefficients ycbcr_coefficients);
121 void storage_task_thread();
122 void storage_task_enqueue(storage_task task);
123 void save_codeddata(GLSurface *surf, storage_task task);
124 int render_packedsequence(movit::YCbCrLumaCoefficients ycbcr_coefficients);
125 int render_packedpicture();
126 void render_packedslice();
127 int render_sequence();
128 int render_picture(GLSurface *surf, int frame_type, int display_frame_num, int gop_start_display_frame_num);
129 void sps_rbsp(movit::YCbCrLumaCoefficients ycbcr_coefficients, bitstream *bs);
130 void pps_rbsp(bitstream *bs);
131 int build_packed_pic_buffer(unsigned char **header_buffer);
132 int render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type);
133 void slice_header(bitstream *bs);
134 int build_packed_seq_buffer(movit::YCbCrLumaCoefficients ycbcr_coefficients, unsigned char **header_buffer);
135 int build_packed_slice_buffer(unsigned char **header_buffer);
136 int init_va(const std::string &va_display);
137 void enable_zerocopy_if_possible();
139 void release_encode();
140 void update_ReferenceFrames(int current_display_frame, int frame_type);
141 void update_RefPicList_P(VAPictureH264 RefPicList0_P[MAX_NUM_REF2]);
142 void update_RefPicList_B(VAPictureH264 RefPicList0_B[MAX_NUM_REF2], VAPictureH264 RefPicList1_B[MAX_NUM_REF2]);
143 GLSurface *allocate_gl_surface();
144 void release_gl_surface(size_t display_frame_num);
146 bool is_shutdown = false;
147 bool has_released_gl_resources = false;
148 std::atomic<bool> use_zerocopy{false};
150 std::thread encode_thread, storage_thread;
152 std::mutex storage_task_queue_mutex;
153 std::condition_variable storage_task_queue_changed;
154 std::queue<storage_task> storage_task_queue; // protected by storage_task_queue_mutex
155 bool storage_thread_should_quit = false; // protected by storage_task_queue_mutex
157 std::mutex frame_queue_mutex;
158 std::condition_variable frame_queue_nonempty;
159 bool encode_thread_should_quit = false; // under frame_queue_mutex
161 int current_storage_frame;
163 PendingFrame current_video_frame; // Used only between begin_frame() and end_frame().
164 std::queue<PendingFrame> pending_video_frames; // under frame_queue_mutex
165 movit::ResourcePool *resource_pool;
168 // Frames that are done rendering and passed on to x264 (if enabled),
169 // but have not been encoded by Quick Sync yet, and thus also not freed.
170 // The key is the display frame number.
171 std::map<int, PendingFrame> reorder_buffer;
172 int quicksync_encoding_frame_num = 0;
174 std::mutex file_audio_encoder_mutex;
175 std::unique_ptr<AudioEncoder> file_audio_encoder;
177 VideoCodecInterface *http_encoder; // nullptr if not using x264/SVT-AV1.
178 VideoCodecInterface *disk_encoder;
179 std::unique_ptr<V4LOutput> v4l_output; // nullptr if not using V4L2 output.
181 Mux* http_mux = nullptr; // To the HTTP server.
182 Mux* srt_mux = nullptr; // To the remote SRT endpoint, if any.
183 std::unique_ptr<Mux> file_mux; // To local disk.
185 // Encoder parameters
186 std::unique_ptr<VADisplayWithCleanup> va_dpy;
187 VAProfile h264_profile = (VAProfile)~0;
188 VAConfigAttrib config_attrib[VAConfigAttribTypeMax];
189 int config_attrib_num = 0, enc_packed_header_idx;
191 GLSurface gl_surfaces[SURFACE_NUM];
193 // For all frames in encoding (refcount > 0), a pointer into gl_surfaces
194 // for the surface used for that frame. Protected by storage_task_queue_mutex.
195 // The key is display frame number.
196 std::unordered_map<size_t, GLSurface *> surface_for_frame;
198 VAConfigID config_id;
199 VAContextID context_id;
200 VAEncSequenceParameterBufferH264 seq_param;
201 VAEncPictureParameterBufferH264 pic_param;
202 VAEncSliceParameterBufferH264 slice_param;
203 VAPictureH264 CurrentCurrPic;
205 struct ReferenceFrame {
207 int display_number; // To track reference counts.
209 std::deque<ReferenceFrame> reference_frames;
211 // Static quality settings.
212 static constexpr unsigned int frame_bitrate = 15000000 / 60; // Doesn't really matter; only initial_qp does.
213 static constexpr unsigned int num_ref_frames = 2;
214 static constexpr int initial_qp = 15;
215 static constexpr int minimal_qp = 0;
216 static constexpr int intra_period = 30;
217 static constexpr int intra_idr_period = TYPICAL_FPS; // About a second; more at lower frame rates. Not ideal.
219 // Quality settings that are meant to be static, but might be overridden
221 int constraint_set_flag = 0;
222 int h264_packedheader = 0; /* support pack header? */
223 int h264_maxref = (1<<16|1);
224 int h264_entropy_mode = 1; /* cabac */
227 unsigned int current_ref_frame_num = 0; // Encoding frame order within this GOP, sans B-frames.
231 int frame_width_mbaligned;
232 int frame_height_mbaligned;
234 DiskSpaceEstimator *disk_space_estimator;
237 #endif // !defined(_QUICKSYNC_ENCODER_IMPL_H)