decoded_video_format->extra_lines_bottom = 0;
decoded_video_format->frame_rate_nom = 3013;
decoded_video_format->frame_rate_den = 100;
+ decoded_video_format->has_signal = false;
return true;
}
if ((video_format & 0xe800) != 0xe800) {
decoded_video_format->extra_lines_bottom = 0;
decoded_video_format->frame_rate_nom = 60;
decoded_video_format->frame_rate_den = 1;
+ decoded_video_format->has_signal = false;
return false;
}
+ decoded_video_format->has_signal = true;
+
// NTSC (480i59.94, I suppose). A special case, see below.
if (video_format == 0xe901 || video_format == 0xe9c1 || video_format == 0xe801) {
decoded_video_format->width = 720;
unsigned extra_lines_top = 0, extra_lines_bottom = 0;
unsigned frame_rate_nom = 0, frame_rate_den = 0;
bool interlaced = false;
+ bool has_signal = false;
};
typedef std::function<void(uint16_t timecode,
FrameAllocator::Frame audio_frame, size_t audio_offset, uint16_t audio_format)>
frame_callback_t;
+class CaptureInterface {
+ public:
+ virtual ~CaptureInterface() {}
+
+ // Does not take ownership.
+ virtual void set_video_frame_allocator(FrameAllocator *allocator) = 0;
+
+ virtual FrameAllocator *get_video_frame_allocator() = 0;
+
+ // Does not take ownership.
+ virtual void set_audio_frame_allocator(FrameAllocator *allocator) = 0;
+
+ virtual FrameAllocator *get_audio_frame_allocator() = 0;
+
+ virtual void set_frame_callback(frame_callback_t callback) = 0;
+
+ // Needs to be run before configure_card().
+ virtual void set_dequeue_thread_callbacks(std::function<void()> init, std::function<void()> cleanup) = 0;
+
+ // Only valid after configure_card().
+ virtual std::string get_description() const = 0;
+
+ virtual void configure_card() = 0;
+
+ virtual void start_bm_capture() = 0;
+
+ virtual void stop_dequeue_thread() = 0;
+};
+
// The actual capturing class, representing capture from a single card.
-class BMUSBCapture {
+class BMUSBCapture : public CaptureInterface {
public:
BMUSBCapture(int card_index)
: card_index(card_index)
{
}
+ ~BMUSBCapture() {}
+
// Does not take ownership.
- void set_video_frame_allocator(FrameAllocator *allocator)
+ void set_video_frame_allocator(FrameAllocator *allocator) override
{
video_frame_allocator = allocator;
}
- FrameAllocator *get_video_frame_allocator()
+ FrameAllocator *get_video_frame_allocator() override
{
return video_frame_allocator;
}
// Does not take ownership.
- void set_audio_frame_allocator(FrameAllocator *allocator)
+ void set_audio_frame_allocator(FrameAllocator *allocator) override
{
audio_frame_allocator = allocator;
}
- FrameAllocator *get_audio_frame_allocator()
+ FrameAllocator *get_audio_frame_allocator() override
{
return audio_frame_allocator;
}
- void set_frame_callback(frame_callback_t callback)
+ void set_frame_callback(frame_callback_t callback) override
{
frame_callback = callback;
}
// Needs to be run before configure_card().
- void set_dequeue_thread_callbacks(std::function<void()> init, std::function<void()> cleanup)
+ void set_dequeue_thread_callbacks(std::function<void()> init, std::function<void()> cleanup) override
{
dequeue_init_callback = init;
dequeue_cleanup_callback = cleanup;
}
// Only valid after configure_card().
- std::string get_description() const {
+ std::string get_description() const override {
return description;
}
- void configure_card();
- void start_bm_capture();
- void stop_dequeue_thread();
+ void configure_card() override;
+ void start_bm_capture() override;
+ void stop_dequeue_thread() override;
+ // TODO: It's rather messy to have these outside the interface.
static void start_bm_thread();
static void stop_bm_thread();