#include <epoxy/gl.h>
#undef Success
+#include <stdbool.h>
+#include <stdint.h>
+
#include <movit/effect_chain.h>
+#include <movit/flat_input.h>
+#include <zita-resampler/resampler.h>
+#include <atomic>
+#include <condition_variable>
+#include <cstddef>
#include <functional>
+#include <memory>
+#include <mutex>
+#include <string>
+#include <thread>
+#include <vector>
-#include "bmusb.h"
+#include "bmusb/bmusb.h"
+#include "alsa_output.h"
+#include "ebu_r128_proc.h"
#include "h264encode.h"
+#include "httpd.h"
#include "pbo_frame_allocator.h"
+#include "ref_counted_frame.h"
#include "ref_counted_gl_sync.h"
+#include "resampling_queue.h"
+#include "theme.h"
+#include "timebase.h"
+#include "stereocompressor.h"
+#include "filter.h"
+#include "input_state.h"
-#define NUM_CARDS 2
+class H264Encoder;
+class QSurface;
+namespace movit {
+class Effect;
+class EffectChain;
+class FlatInput;
+class ResourcePool;
+} // namespace movit
namespace movit {
class YCbCrInput;
}
class QOpenGLContext;
-class QSurface;
+class QSurfaceFormat;
class Mixer {
public:
- // The surfaces are used for offscreen destinations for OpenGL contexts we need.
- // TODO: Figure out something slightly more generic.
- Mixer(QSurface *surface1, QSurface *surface2, QSurface *surface3, QSurface *surface4);
+ // The surface format is used for offscreen destinations for OpenGL contexts we need.
+ Mixer(const QSurfaceFormat &format, unsigned num_cards);
~Mixer();
void start();
void quit();
- enum Source {
- SOURCE_INPUT1,
- SOURCE_INPUT2,
- SOURCE_SBS,
+ void transition_clicked(int transition_num);
+ void channel_clicked(int preview_num);
+
+ enum Output {
+ OUTPUT_LIVE = 0,
+ OUTPUT_PREVIEW,
+ OUTPUT_INPUT0, // 1, 2, 3, up to 15 follow numerically.
+ NUM_OUTPUTS = 18
};
- void cut(Source source);
struct DisplayFrame {
- GLuint texnum;
- RefCountedGLsync ready_fence; // Asserted when the texture is done rendering.
+ // The chain for rendering this frame. To render a display frame,
+ // first wait for <ready_fence>, then call <setup_chain>
+ // to wire up all the inputs, and then finally call
+ // chain->render_to_screen() or similar.
+ movit::EffectChain *chain;
+ std::function<void()> setup_chain;
+
+ // Asserted when all the inputs are ready; you cannot render the chain
+ // before this.
+ RefCountedGLsync ready_fence;
+
+ // Holds on to all the input frames needed for this display frame,
+ // so they are not released while still rendering.
+ std::vector<RefCountedFrame> input_frames;
+
+ // Textures that should be released back to the resource pool
+ // when this frame disappears, if any.
+ // TODO: Refcount these as well?
+ std::vector<GLuint> temp_textures;
};
// Implicitly frees the previous one if there's a new frame available.
- bool get_display_frame(DisplayFrame *frame);
+ bool get_display_frame(Output output, DisplayFrame *frame) {
+ return output_channel[output].get_display_frame(frame);
+ }
typedef std::function<void()> new_frame_ready_callback_t;
- void set_frame_ready_fallback(new_frame_ready_callback_t callback);
+ void set_frame_ready_callback(Output output, new_frame_ready_callback_t callback)
+ {
+ output_channel[output].set_frame_ready_callback(callback);
+ }
+
+ typedef std::function<void(float level_lufs, float peak_db,
+ float global_level_lufs, float range_low_lufs, float range_high_lufs,
+ float auto_gain_staging_db)> audio_level_callback_t;
+ void set_audio_level_callback(audio_level_callback_t callback)
+ {
+ audio_level_callback = callback;
+ }
+
+ std::vector<std::string> get_transition_names()
+ {
+ return theme->get_transition_names(pts());
+ }
+
+ unsigned get_num_channels() const
+ {
+ return theme->get_num_channels();
+ }
+
+ std::string get_channel_name(unsigned channel) const
+ {
+ return theme->get_channel_name(channel);
+ }
+
+ bool get_supports_set_wb(unsigned channel) const
+ {
+ return theme->get_supports_set_wb(channel);
+ }
+
+ void set_wb(unsigned channel, double r, double g, double b) const
+ {
+ theme->set_wb(channel, r, g, b);
+ }
+
+ void set_locut_cutoff(float cutoff_hz)
+ {
+ locut_cutoff_hz = cutoff_hz;
+ }
+
+ float get_limiter_threshold_dbfs()
+ {
+ return limiter_threshold_dbfs;
+ }
+
+ float get_compressor_threshold_dbfs()
+ {
+ return compressor_threshold_dbfs;
+ }
+
+ void set_limiter_threshold_dbfs(float threshold_dbfs)
+ {
+ limiter_threshold_dbfs = threshold_dbfs;
+ }
+
+ void set_compressor_threshold_dbfs(float threshold_dbfs)
+ {
+ compressor_threshold_dbfs = threshold_dbfs;
+ }
+
+ void set_limiter_enabled(bool enabled)
+ {
+ limiter_enabled = enabled;
+ }
+
+ void set_compressor_enabled(bool enabled)
+ {
+ compressor_enabled = enabled;
+ }
+
+ void reset_meters();
private:
- void bm_frame(int card_index, uint16_t timecode,
+ void bm_frame(unsigned card_index, uint16_t timecode,
FrameAllocator::Frame video_frame, size_t video_offset, uint16_t video_format,
FrameAllocator::Frame audio_frame, size_t audio_offset, uint16_t audio_format);
void place_rectangle(movit::Effect *resample_effect, movit::Effect *padding_effect, float x0, float y0, float x1, float y1);
void thread_func();
+ void audio_thread_func();
+ void process_audio_one_frame(int64_t frame_pts_int, int num_samples);
+ void subsample_chroma(GLuint src_tex, GLuint dst_dst);
+ void release_display_frame(DisplayFrame *frame);
+ double pts() { return double(pts_int) / TIMEBASE; }
- std::unique_ptr<PBOFrameAllocator> pbo_allocator1, pbo_allocator2;
+ HTTPD httpd;
+ unsigned num_cards;
- QSurface *surface1, *surface2, *surface3, *surface4;
- std::unique_ptr<movit::EffectChain> chain;
- movit::ResourcePool *resource_pool; // Owned by <chain>.
+ QSurface *mixer_surface, *h264_encoder_surface;
+ std::unique_ptr<movit::ResourcePool> resource_pool;
+ std::unique_ptr<Theme> theme;
+ std::unique_ptr<movit::EffectChain> display_chain;
GLuint cbcr_program_num; // Owned by <resource_pool>.
std::unique_ptr<H264Encoder> h264_encoder;
- // Effects part of <chain>. Owned by <chain>.
- movit::YCbCrInput *input[NUM_CARDS];
- movit::Effect *resample_effect, *resample2_effect;
- movit::Effect *padding_effect, *padding2_effect;
+ // Effects part of <display_chain>. Owned by <display_chain>.
+ movit::FlatInput *display_input;
- Source current_source = SOURCE_INPUT1;
- int frame = 0;
-
- std::mutex display_frame_mutex;
- DisplayFrame current_display_frame, ready_display_frame; // protected by <frame_mutex>
- bool has_current_display_frame = false, has_ready_display_frame = false; // protected by <frame_mutex>
+ int64_t pts_int = 0; // In TIMEBASE units.
std::mutex bmusb_mutex;
struct CaptureCard {
BMUSBCapture *usb;
+ std::unique_ptr<PBOFrameAllocator> frame_allocator;
- // Threading stuff
- bool thread_initialized = false;
+ // Stuff for the OpenGL context (for texture uploading).
QSurface *surface;
QOpenGLContext *context;
bool new_data_ready = false; // Whether new_frame contains anything.
- FrameAllocator::Frame new_frame;
+ bool should_quit = false;
+ RefCountedFrame new_frame;
+ int64_t new_frame_length; // In TIMEBASE units.
+ bool new_frame_interlaced;
+ unsigned new_frame_field; // Which field (0 or 1) of the frame to use. Always 0 for progressive.
GLsync new_data_ready_fence; // Whether new_frame is ready for rendering.
std::condition_variable new_data_ready_changed; // Set whenever new_data_ready is changed.
+ unsigned dropped_frames = 0; // Before new_frame.
+
+ // Accumulated errors in number of 1/TIMEBASE samples. If OUTPUT_FREQUENCY divided by
+ // frame rate is integer, will always stay zero.
+ unsigned fractional_samples = 0;
+
+ std::mutex audio_mutex;
+ std::unique_ptr<ResamplingQueue> resampling_queue; // Under audio_mutex.
+ int last_timecode = -1; // Unwrapped.
+ int64_t next_local_pts = 0; // Beginning of next frame, in TIMEBASE units.
};
- CaptureCard cards[NUM_CARDS]; // protected by <bmusb_mutex>
+ CaptureCard cards[MAX_CARDS]; // protected by <bmusb_mutex>
+
+ InputState input_state;
- FrameAllocator::Frame bmusb_current_rendering_frame[NUM_CARDS];
+ class OutputChannel {
+ public:
+ ~OutputChannel();
+ void output_frame(DisplayFrame frame);
+ bool get_display_frame(DisplayFrame *frame);
+ void set_frame_ready_callback(new_frame_ready_callback_t callback);
- new_frame_ready_callback_t new_frame_ready_callback;
- bool has_new_frame_ready_callback = false;
+ private:
+ friend class Mixer;
+
+ Mixer *parent = nullptr; // Not owned.
+ std::mutex frame_mutex;
+ DisplayFrame current_frame, ready_frame; // protected by <frame_mutex>
+ bool has_current_frame = false, has_ready_frame = false; // protected by <frame_mutex>
+ new_frame_ready_callback_t new_frame_ready_callback;
+ bool has_new_frame_ready_callback = false;
+ };
+ OutputChannel output_channel[NUM_OUTPUTS];
std::thread mixer_thread;
- bool should_quit = false;
+ std::thread audio_thread;
+ std::atomic<bool> should_quit{false};
+
+ audio_level_callback_t audio_level_callback = nullptr;
+ std::mutex r128_mutex;
+ Ebu_r128_proc r128; // Under r128_mutex.
+
+ Resampler peak_resampler;
+ std::atomic<float> peak{0.0f};
+
+ StereoFilter locut; // Default cutoff 150 Hz, 24 dB/oct.
+ std::atomic<float> locut_cutoff_hz;
+
+ // First compressor; takes us up to about -12 dBFS.
+ StereoCompressor level_compressor;
+ float last_gain_staging_db = 0.0f;
+
+ static constexpr float ref_level_dbfs = -14.0f;
+
+ StereoCompressor limiter;
+ std::atomic<float> limiter_threshold_dbfs{ref_level_dbfs + 4.0f}; // 4 dB.
+ std::atomic<bool> limiter_enabled{true};
+ StereoCompressor compressor;
+ std::atomic<float> compressor_threshold_dbfs{ref_level_dbfs - 12.0f}; // -12 dB.
+ std::atomic<bool> compressor_enabled{true};
+
+ std::unique_ptr<ALSAOutput> alsa;
+
+ struct AudioTask {
+ int64_t pts_int;
+ int num_samples;
+ };
+ std::mutex audio_mutex;
+ std::condition_variable audio_task_queue_changed;
+ std::queue<AudioTask> audio_task_queue; // Under audio_mutex.
};
extern Mixer *global_mixer;
projects / nageru / blobdiff