Differences

This shows you the differences between two versions of the page.

--- guides:ssdv [2016/04/03 22:35] – [Packet Format] fsphil
+++ guides:ssdv [2016/06/30 09:35] (current) – [Packet Format] fsphil
@@ Line 11: / Line 11: @@
 |    1 | Packet Type  |    1 | 0x66 - Normal mode (224 byte packet + 32 byte FEC) |
 |      |              |      | 0x67 - No-FEC mode (256 byte packet) |
-|      |              |      | 0x68 - No-FEC mode (224 byte packet) |
 |    2 | Callsign     |    4 | Base-40 encoded callsign. Up to 6 digits |
 |    6 | Image ID     |    1 | Normally beginning at 0 and incremented by 1 for each new image |
@@ Line 17: / Line 16: @@
 |    9 | Width        |    1 | Width of the image in MCU blocks (pixels / 16) 0 = Invalid |
 |   10 | Height       |    1 | Height of the image in MCU blocks (pixels / 16) 0 = Invalid |
-|   11 | Flags        |    1 | 00000exx: 00000 = Reserved, e = EOI flag (1 = Last Packet), xx = Subsampling Mode (0 = 2x2, 1 = 1x2, 2 = 2x1, 3 = 1x1) |
+|   11 | Flags        |    1 | 00qqqexx: 00 = Reserved, qqq = JPEG quality level (0-7 XOR 4), e = EOI flag (1 = Last Packet), xx = Subsampling Mode (0 = 2x2, 1 = 1x2, 2 = 2x1, 3 = 1x1) |
 |   12 | MCU offset   |    1 | Offset in bytes to the beginning of the first MCU block in the payload, or 0xFF if none present |
 |   13 | MCU index    |    2 | The number of the MCU pointed to by the offset above (big endian), or 0xFFFF if none present |