Have frequency (and hsync/vsync) information on the inputs in the status message

[mithro]

Change the following

HDMI2USB>status
input0:  0x0
input1:  1280x720
output0: 1280x720@50Hz from input1
output1: 1280x720@50Hz from input0
encoder: off
ddr: read: 1470Mbps  write:  737Mbps  all: 2207Mbp

to

HDMI2USB>status
input0:  0x0
input1:  1280x720@60Hz {pixel clk: 75MHz, hsync: +, vsync: -}
output0: 1280x720@50Hz from input1
output1: 1280x720@50Hz from input0
encoder: off
ddr: read: 1470Mbps  write:  737Mbps  all: 2207Mbp

[mithro]

This will probably require modification of both the gateware on the fpga and the firmware running on the lm32 softcore.

You'll need to look at code in https://github.com/timvideos/HDMI2USB-misoc-firmware/blob/master/hdl/hdmi_in/analysis.py

[mithro]

@cr1901 - please take a look at this.

[mithro]

Also take a look at https://warmcat.com/hardware%20design/hdmi/fpga/2015/10/21/hdmi-capture-and-analysis-fpga-project-3.html - specially the "Raster measurement and statistics collection" section.

This is the data the HDMICap project captures;

{
 "pll_locked":"1",
 "syncs_detected":"1",
 "sanity":"1",
 "pxclk_MHz":"74.255587",
 "ctrl_ch0_pc":"37067.5",
 "ctrl_ch1_pc":"9755.0",
 "ctrl_ch2_pc":"9755.4",
 "dvi":"0",
 "hpol":"+",
 "vpol":"+",
 "hact":"1280",
 "vact":"720",
 "hrate_kHz":"55.214",
 "vrate_Hz":"73.619",
 "htot":"1980",
 "hbl":"700",
 "hsa":"40",
 "hfp":"440",
 "hbp":"220",
 "vtot":"750",
 "vbl":"30",
 "vsa":"5",
 "vfp":"5",
 "vbp":"20",
 "px_in_frame":"1485000",
 "htot_in_frame":"750.000",
 "integer_htot_in_frame":"1",
 "line_timestamp":"457",
 "frame_timestamp":"17577",
 "data_px_active":"416045",
 "data_px_active_line":"577.840",
 "data_vb":"23281",
 "ctrl_px_active":"85640",
 "ctrl_px_active_line":"118.944",
 "ctrl_vb":"33977",
 "est_video_clocks":"924617",
 "actual_video_clocks":"921600",
 "terc4_errs_frame":"766",
 "vsync_onset_hpx":"0"
}

There might be stuff you can crib from https://git.linaro.org/people/andy.green/hdmicap-vhdl.git/blob/HEAD:/hdmicap_v1_0_S00_AXI.vhd