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"
24 #define SURFACE_NUM 16 /* 16 surfaces for source YUV */
25 #define MAX_NUM_REF1 16 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
26 #define MAX_NUM_REF2 32 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
31 int max_size_in_dword;
33 typedef struct __bitstream bitstream;
38 class DiskSpaceEstimator;
42 struct VADisplayWithCleanup {
43 ~VADisplayWithCleanup();
46 Display *x11_display = nullptr;
47 bool can_use_zerocopy = true;
50 std::unique_ptr<VADisplayWithCleanup> va_open_display(const std::string &va_display); // Can return nullptr on failure.
52 class QuickSyncEncoderImpl {
54 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);
55 ~QuickSyncEncoderImpl();
56 void add_audio(int64_t pts, std::vector<float> audio);
57 bool is_zerocopy() const;
58 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);
59 RefCountedGLsync end_frame();
62 void release_gl_resources();
63 void set_stream_mux(Mux *mux)
68 // So we never get negative dts.
69 int64_t global_delay() const {
70 return int64_t(ip_period - 1) * (TIMEBASE / MAX_FPS);
75 unsigned long long display_order;
77 std::vector<float> audio;
78 int64_t pts, dts, duration;
79 movit::YCbCrLumaCoefficients ycbcr_coefficients;
80 ReceivedTimestamps received_ts;
81 std::vector<size_t> ref_display_frame_numbers;
84 RefCountedGLsync fence;
85 std::vector<RefCountedFrame> input_frames;
86 int64_t pts, duration;
87 movit::YCbCrLumaCoefficients ycbcr_coefficients;
90 // Only if x264_video_to_disk == false.
91 VASurfaceID src_surface, ref_surface;
93 VAImage surface_image;
95 // Only if use_zerocopy == true (which implies x264_video_to_disk == false).
96 GLuint y_tex, cbcr_tex;
97 EGLImage y_egl_image, cbcr_egl_image;
99 // Only if use_zerocopy == false.
101 uint8_t *y_ptr, *cbcr_ptr;
102 size_t y_offset, cbcr_offset;
104 // Surfaces can be busy (have refcount > 0) for a variety of
105 // reasons: First of all because they belong to a frame that's
106 // under encoding. But also reference frames take refcounts;
107 // while a frame is being encoded, all its reference frames
108 // also have increased refcounts so that they are not dropped.
109 // Similarly, just being in <reference_frames> increases the
110 // refcount. Until it is back to zero, the surface cannot be given
111 // out for encoding another frame. Use release_gl_surface()
112 // to reduce the refcount, which will free the surface if
113 // the refcount reaches zero.
115 // Protected by storage_task_queue_mutex.
119 void open_output_file(const std::string &filename);
120 void encode_thread_func();
121 void encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts);
122 void add_packet_for_uncompressed_frame(int64_t pts, int64_t duration, const uint8_t *data);
123 void pass_frame(PendingFrame frame, int display_frame_num, int64_t pts, int64_t duration);
124 void encode_frame(PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
125 int frame_type, int64_t pts, int64_t dts, int64_t duration, movit::YCbCrLumaCoefficients ycbcr_coefficients);
126 void storage_task_thread();
127 void storage_task_enqueue(storage_task task);
128 void save_codeddata(GLSurface *surf, storage_task task);
129 int render_packedsequence(movit::YCbCrLumaCoefficients ycbcr_coefficients);
130 int render_packedpicture();
131 void render_packedslice();
132 int render_sequence();
133 int render_picture(GLSurface *surf, int frame_type, int display_frame_num, int gop_start_display_frame_num);
134 void sps_rbsp(movit::YCbCrLumaCoefficients ycbcr_coefficients, bitstream *bs);
135 void pps_rbsp(bitstream *bs);
136 int build_packed_pic_buffer(unsigned char **header_buffer);
137 int render_slice(int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num, int frame_type);
138 void slice_header(bitstream *bs);
139 int build_packed_seq_buffer(movit::YCbCrLumaCoefficients ycbcr_coefficients, unsigned char **header_buffer);
140 int build_packed_slice_buffer(unsigned char **header_buffer);
141 int init_va(const std::string &va_display);
142 void enable_zerocopy_if_possible();
144 void release_encode();
145 void update_ReferenceFrames(int current_display_frame, int frame_type);
146 void update_RefPicList_P(VAPictureH264 RefPicList0_P[MAX_NUM_REF2]);
147 void update_RefPicList_B(VAPictureH264 RefPicList0_B[MAX_NUM_REF2], VAPictureH264 RefPicList1_B[MAX_NUM_REF2]);
148 GLSurface *allocate_gl_surface();
149 void release_gl_surface(size_t display_frame_num);
151 bool is_shutdown = false;
152 bool has_released_gl_resources = false;
153 std::atomic<bool> use_zerocopy{false};
155 std::thread encode_thread, storage_thread;
157 std::mutex storage_task_queue_mutex;
158 std::condition_variable storage_task_queue_changed;
159 std::queue<storage_task> storage_task_queue; // protected by storage_task_queue_mutex
160 bool storage_thread_should_quit = false; // protected by storage_task_queue_mutex
162 std::mutex frame_queue_mutex;
163 std::condition_variable frame_queue_nonempty;
164 bool encode_thread_should_quit = false; // under frame_queue_mutex
166 int current_storage_frame;
168 PendingFrame current_video_frame; // Used only between begin_frame() and end_frame().
169 std::queue<PendingFrame> pending_video_frames; // under frame_queue_mutex
170 movit::ResourcePool *resource_pool;
173 // Frames that are done rendering and passed on to x264 (if enabled),
174 // but have not been encoded by Quick Sync yet, and thus also not freed.
175 // The key is the display frame number.
176 std::map<int, PendingFrame> reorder_buffer;
177 int quicksync_encoding_frame_num = 0;
179 std::mutex file_audio_encoder_mutex;
180 std::unique_ptr<AudioEncoder> file_audio_encoder;
182 X264Encoder *x264_encoder; // nullptr if not using x264.
184 Mux* stream_mux = nullptr; // To HTTP.
185 std::unique_ptr<Mux> file_mux; // To local disk.
187 // Encoder parameters
188 std::unique_ptr<VADisplayWithCleanup> va_dpy;
189 VAProfile h264_profile = (VAProfile)~0;
190 VAConfigAttrib config_attrib[VAConfigAttribTypeMax];
191 int config_attrib_num = 0, enc_packed_header_idx;
193 GLSurface gl_surfaces[SURFACE_NUM];
195 // For all frames in encoding (refcount > 0), a pointer into gl_surfaces
196 // for the surface used for that frame. Protected by storage_task_queue_mutex.
197 // The key is display frame number.
198 std::unordered_map<size_t, GLSurface *> surface_for_frame;
200 VAConfigID config_id;
201 VAContextID context_id;
202 VAEncSequenceParameterBufferH264 seq_param;
203 VAEncPictureParameterBufferH264 pic_param;
204 VAEncSliceParameterBufferH264 slice_param;
205 VAPictureH264 CurrentCurrPic;
207 struct ReferenceFrame {
209 int display_number; // To track reference counts.
211 std::deque<ReferenceFrame> reference_frames;
213 // Static quality settings.
214 static constexpr unsigned int frame_bitrate = 15000000 / 60; // Doesn't really matter; only initial_qp does.
215 static constexpr unsigned int num_ref_frames = 2;
216 static constexpr int initial_qp = 15;
217 static constexpr int minimal_qp = 0;
218 static constexpr int intra_period = 30;
219 static constexpr int intra_idr_period = MAX_FPS; // About a second; more at lower frame rates. Not ideal.
221 // Quality settings that are meant to be static, but might be overridden
223 int constraint_set_flag = 0;
224 int h264_packedheader = 0; /* support pack header? */
225 int h264_maxref = (1<<16|1);
226 int h264_entropy_mode = 1; /* cabac */
229 unsigned int current_ref_frame_num = 0; // Encoding frame order within this GOP, sans B-frames.
233 int frame_width_mbaligned;
234 int frame_height_mbaligned;
236 DiskSpaceEstimator *disk_space_estimator;
239 #endif // !defined(_QUICKSYNC_ENCODER_IMPL_H)