1 files changed, 13 insertions, 12 deletions
diff --git a/ffmpeg_backend.h b/ffmpeg_backend.h
index d6a6a66..de73ff4 100644
--- a/ffmpeg_backend.h
+++ b/ffmpeg_backend.h
@@ -1,22 +1,23 @@
-struct av_codec_info {
-    real32 AvgPTSPerFrame;
+// NOTE(fox): Even though each layer has its own completely isolated AV
+// instance, it appears two layers with the same file still share something.
+// When the layers aren't at the same position in time, the playhead of one
+// layer gets misaligned every few frames and causes a manual seek back to the
+// position. Different files don't exhibit this behavior.
 
-    AVFormatContext *FileFormatContext;
-    AVCodecParameters *VideoCodecParameters;
+struct av_info {
+    uint64 PreviousPTS = -1; // PTS value of the previous frame, used to check timings.
+
+    AVCodecParameters *VideoCodecParameters;  // Used to supply info about the decoder.
     const AVCodec* VideoCodec;
-    const AVCodecHWConfig* VideoHWConfig;
+    // const AVCodecHWConfig* VideoHWConfig;  // Haven't done enough research to know if HW decoding is already done by default or if we need these.
     // AVPixelFormat HWPixFormat;
+    AVStream *VideoStream;    // Which stream, or channel, the video is in. Holds FPS info and is used to verify that the decoded packet belongs to this stream.
+    AVFormatContext *FileFormatContext; // Umbrella for everything else, seems to contain the playhead state
     AVCodecContext *VideoCodecContext;
-    AVStream *VideoStream;
-};
-
-struct av_packet_info {
-    uint64 PreviousPTS = -1; // PTS value of the previous frame, used to check timings.
-
     AVPacket *VideoPacket;
     AVFrame *VideoFrame;
     SwsContext *RGBContext;
 };
 
-static bool32 AV_TryFrame(av_codec_info *AV, av_packet_info *AVPacket, int32 *err);     // Internal attempt to decode a frame. Typically run in a while loop until it returns true.
+static bool32 AV_TryFrame(av_info *AVPacket, int32 *err);     // Internal attempt to decode a frame. Typically run in a while loop until it returns true.