X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=bmusb.h;h=d47ce8e85c4541be65dcd89c7b10ed727781b153;hb=ba6d58ee308949b96975c3081bd1c5411dd6966c;hp=b2725ab76dc5154e04a3b57797ed21c5182231f6;hpb=f38bf2bef09e52ba1e15678f5688132f282b50c2;p=bmusb

diff --git a/bmusb.h b/bmusb.h
index b2725ab..d47ce8e 100644
--- a/bmusb.h
+++ b/bmusb.h
@@ -64,8 +64,8 @@ typedef std::function<void(uint16_t timecode,
 // The actual capturing class, representing capture from a single card.
 class BMUSBCapture {
  public:
-	BMUSBCapture(int vid = 0x1edb, int pid = 0xbd3b)
-		: vid(vid), pid(pid)
+	BMUSBCapture(int card_index)
+		: card_index(card_index)
 	{
 	}
 
@@ -150,8 +150,18 @@ class BMUSBCapture {
 	static constexpr int NUM_BMUSB_REGISTERS = 60;
 	uint8_t register_file[NUM_BMUSB_REGISTERS];
 
-	int vid, pid;
+	int card_index;
 	std::vector<libusb_transfer *> iso_xfrs;
+	int assumed_frame_width = 1280;
 };
 
+// Get details for the given video format; returns false if detection was incomplete.
+// Note: Frame rate is _frame_ rate, not field rate. So 1080i60 gets 30/1, _not_ 60/1.
+// "second_field_start" is only valid for interlaced modes; it signifies
+// how many lines from the very top of the frame there are before the second field
+// starts (so it will always be >= height/2 + extra_lines_top).
+bool decode_video_format(uint16_t video_format, unsigned *width, unsigned *height, unsigned *second_field_start,
+                         unsigned *extra_lines_top, unsigned *extra_lines_bottom,
+                         unsigned *frame_rate_nom, unsigned *frame_rate_den, bool *interlaced);
+
 #endif