large changes to bitmap structure

1 files changed, 22 insertions, 0 deletions

diff --git a/ffmpeg_backend.h b/ffmpeg_backend.h
new file mode 100644
index 0000000..d6a6a66
--- /dev/null
+++ b/ffmpeg_backend.h
@@ -0,0 +1,22 @@
+struct av_codec_info {
+    real32 AvgPTSPerFrame;
+
+    AVFormatContext *FileFormatContext;
+    AVCodecParameters *VideoCodecParameters;
+    const AVCodec* VideoCodec;
+    const AVCodecHWConfig* VideoHWConfig;
+    // AVPixelFormat HWPixFormat;
+    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.
+