#include "video_encoder.h"
class ALSAOutput;
+class ChromaSubsampler;
class QSurface;
+class QSurfaceFormat;
namespace movit {
class Effect;
class FlatInput;
class ResourcePool;
} // namespace movit
-class QSurfaceFormat;
// For any card that's not the master (where we pick out the frames as they
// come, as fast as we can process), there's going to be a queue. The question
void schedule_audio_resampling_tasks(unsigned dropped_frames, int num_samples_per_frame, int length_per_frame);
void render_one_frame(int64_t duration);
void audio_thread_func();
- void subsample_chroma(GLuint src_tex, GLuint dst_dst);
void release_display_frame(DisplayFrame *frame);
double pts() { return double(pts_int) / TIMEBASE; }
std::atomic<unsigned> audio_source_channel{0};
std::atomic<unsigned> master_clock_channel{0};
std::unique_ptr<movit::EffectChain> display_chain;
- GLuint cbcr_program_num; // Owned by <resource_pool>.
- GLuint cbcr_vbo; // Holds position and texcoord data.
- GLuint cbcr_position_attribute_index, cbcr_texcoord_attribute_index;
+ std::unique_ptr<ChromaSubsampler> chroma_subsampler;
std::unique_ptr<VideoEncoder> video_encoder;
// Effects part of <display_chain>. Owned by <display_chain>.
int64_t pts_int = 0; // In TIMEBASE units.
- std::mutex bmusb_mutex;
+ // Accumulated errors in number of 1/TIMEBASE audio samples. If OUTPUT_FREQUENCY divided by
+ // frame rate is integer, will always stay zero.
+ unsigned fractional_samples = 0;
+
+ std::mutex card_mutex;
bool has_bmusb_thread = false;
struct CaptureCard {
bmusb::CaptureInterface *capture = nullptr;
QueueLengthPolicy queue_length_policy; // Refers to the "new_frames" queue.
- // 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;
-
int last_timecode = -1; // Unwrapped.
};
- CaptureCard cards[MAX_VIDEO_CARDS]; // protected by <bmusb_mutex>
+ CaptureCard cards[MAX_VIDEO_CARDS]; // Protected by <card_mutex>.
AudioMixer audio_mixer; // Same as global_audio_mixer (see audio_mixer.h).
- void get_one_frame_from_each_card(unsigned master_card_index, CaptureCard::NewFrame new_frames[MAX_VIDEO_CARDS], bool has_new_frame[MAX_VIDEO_CARDS], int num_samples[MAX_VIDEO_CARDS]);
+ struct OutputFrameInfo {
+ int dropped_frames; // Since last frame.
+ int num_samples; // Audio samples needed for this output frame.
+ int64_t frame_duration; // In TIMEBASE units.
+ };
+ OutputFrameInfo get_one_frame_from_each_card(unsigned master_card_index, CaptureCard::NewFrame new_frames[MAX_VIDEO_CARDS], bool has_new_frame[MAX_VIDEO_CARDS]);
InputState input_state;