1 files changed, 27 insertions, 8 deletions

diff --git a/src/ffmpeg.zig b/src/ffmpeg.zig
index be7b6bf..67c3c2c 100644
--- a/src/ffmpeg.zig
+++ b/src/ffmpeg.zig
@@ -23,17 +23,32 @@ pub fn check(err: c_int) Errors!void {
     return error.AVGenericError;
 }
 
-fn get_format_context(filename: [*:0]const u8, format_name: ?[*:0]const u8) !*c.AVFormatContext {
-    var format_ctx: ?*c.AVFormatContext = null;
-    var format: ?*const c.AVInputFormat = null;
-    var options: ?*c.AVDictionary = null;
-
+fn get_format_context(
+    filename: [*:0]const u8,
+    format_name: ?[*:0]const u8,
+    format_options: []const [*c]c.lo_arg,
+) !*c.AVFormatContext {
     c.avdevice_register_all();
 
+    var format: ?*const c.AVInputFormat = null;
     if (format_name) |name| {
         format = c.av_find_input_format(name);
     }
 
+    var options: ?*c.AVDictionary = null;
+    var i: usize = 0;
+    std.debug.assert(format_options.len % 2 == 0);
+    std.debug.print("len {}\n", .{format_options.len});
+    while (i < format_options.len) : (i += 2) {
+        try check(c.av_dict_set(
+            &options,
+            &format_options[i].*.s,
+            &format_options[i + 1].*.s,
+            0,
+        ));
+    }
+
+    var format_ctx: ?*c.AVFormatContext = null;
     try check(c.avformat_open_input(&format_ctx, filename, format, &options));
     errdefer c.avformat_close_input(&format_ctx);
 
@@ -239,8 +254,10 @@ pub const VideoSource = struct {
     pub fn init(
         allocator: std.mem.Allocator,
         progress_root: std.Progress.Node,
-        filename: [*:0]const u8,
         texture_type: gl.Texture.Type,
+        filename: [*:0]const u8,
+        format_name: ?[*:0]const u8,
+        format_options: []const [*c]c.lo_arg,
     ) !*gl.Source {
         const self = try allocator.create(VideoSource);
         errdefer allocator.destroy(self);
@@ -248,7 +265,7 @@ pub const VideoSource = struct {
         const progress = progress_root.start("loading texture", 2);
         defer progress.end();
 
-        var format = try get_format_context(filename, null);
+        var format = try get_format_context(filename, format_name, format_options);
         defer c.avformat_close_input(@ptrCast(&format));
 
         try check(c.avformat_find_stream_info(format, null));
@@ -304,11 +321,13 @@ pub const StreamSource = struct {
         allocator: std.mem.Allocator,
         constants: *const gl.Constants,
         filename: [*:0]const u8,
+        format_name: ?[*:0]const u8,
+        format_options: []const [*c]c.lo_arg,
     ) !*gl.Source {
         const self = try allocator.create(StreamSource);
         errdefer allocator.destroy(self);
 
-        var format = try get_format_context(filename, null);
+        var format = try get_format_context(filename, format_name, format_options);
         errdefer c.avformat_close_input(@ptrCast(&format));
         format.flags |= c.AVFMT_FLAG_NONBLOCK;