VCC/HailoImageProcessor
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got it compiling and fixed errors

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Signed-off-by: Nickiel12 <nickiel@nickiel.net>
This commit is contained in:
Nickiel12 2024-10-25 03:28:52 +00:00
parent 4dfc19159e
commit aae1de8291
2 changed files with 39 additions and 30 deletions
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1
flake.nix
View file

@ -21,6 +21,7 @@
];
buildInputs = with pkgs; [
zig_exe
pkg-config
glib
glib.dev
gst_all_1.gstreamer

62
src/main.zig
View file

@ -25,24 +25,20 @@ pub fn main() !void {
// This allows me to utilize the same command line args and gstreamer
gst.init(@ptrCast(&std.os.argv.len), @ptrCast(&std.os.argv.ptr));
const source: ?*gst.Element = gst.ElementFactory.make("videotestsrc", "source");
const sink: ?*gst.Element = gst.ElementFactory.make("autovideosink", "sink");
const source: *gst.Element = gst.ElementFactory.make("videotestsrc", "source") orelse unreachable;
const sink: *gst.Element = gst.ElementFactory.make("autovideosink", "sink") orelse unreachable;
const pipeline: ?*gst.Element = gst.Pipeline.new("test-pipeline");
if (source == null or sink == null or pipeline == null) {
std.debug.panic("Not all elements could be created!", .{});
}
const pipeline: *gst.Pipeline = gst.Pipeline.new("test-pipeline");
// When you look into the GST_BIN macro that zig can't compile,
// it really is just this pointer cast with extra steps of verification
const bin: *gst.Bin = pipeline.Parent;
const bin: *gst.Bin = &pipeline.f_bin;
// Gstreamer gives a critical warning when using gst.gst_bin_add_many, but doesn't
// when calling each individually
_ = gst.Bin.add(*bin, source);
_ = gst.Bin.add(*bin, sink);
_ = gst.Bin.add(bin, source);
_ = gst.Bin.add(bin, sink);
// the failure return code is -1 I believe
if (gst.Element.link(source, sink) < 0) {
@ -51,38 +47,50 @@ pub fn main() !void {
}
// g_int is just i32. You can
source.set("pattern", @as(i16, 0));
// source.set("pattern", @as(i16, 0));
gobject.Object.set(source.as(gobject.Object), "pattern", @as(i16, 0));
const ret = pipeline.setState(gst.State.playing);
const ret = pipeline.as(gst.Element).setState(gst.State.playing);
if (ret == gst.StateChangeReturn.failure) {
pipeline.unref();
std.debug.panic("Could not start pipeline", .{});
}
const bus: *gst.Bus = pipeline.getBus();
const msg: *gst.Message = bus.popFiltered( gst.MessageType.flags_eos + gst.MessageType.flags_warning );
// const msg: *gst.Message = bus.popFiltered( gst.MessageType.flags_eos + gst.MessageType.flags_warning );
const message_type: gst.MessageType = .{ .eos = true, .warning = true };
const ret_msg: ?*gst.Message = bus.popFiltered(message_type);
if (msg.f_type == 1) {
const err: glib.Error = null;
var debug_info: [*][*:0]u8 = null;
std.debug.print("reg_msg returned!\n", .{});
switch (msg.f_type) {
1 => {
msg.parseError(err, &debug_info);
std.debug.print("Error received from element {s}: {s}", .{ gst.GST_OBJECT_NAME(msg.src), err.*.*.message });
if (ret_msg) |msg| {
if (msg.f_type.eos == true) {
std.debug.print("EOS recieved\n", .{});
} else if (msg.f_type.warning == true) {
std.debug.print("Warning message received\n", .{});
const err: ?**glib.Error = null;
const debug_info: ?*[*:0]u8 = null;
msg.parseError(err, debug_info);
if (err) |e| {
std.debug.print("Error received from element {s}: {s}", .{ msg.f_src, e.*.*.message });
}
if (debug_info != null) { // I couldn't figure out how to do a orelse statement for this unwrap.
std.debug.print("Debugging information: {s}", .{debug_info.?});
}
glib.clearError(err);
glib.free(debug_info);
},
else => {},
glib.clearError(@ptrCast(err));
glib.free(@ptrCast(debug_info));
} else {
std.debug.print("Unknown type received {any}\n", .{ msg });
}
msg.unref();
// msg.unref();
} else {
std.debug.print("ret message not handled type: {any}\n", .{ ret_msg });
}
bus.unref();
pipeline.setState(gst.State.null);
_ = pipeline.as(gst.Element).setState(gst.State.null);
pipeline.unref();
std.debug.print("run complete\n", .{});
}