Add a feature on VideoInput to interrupt the playing video.

[nageru] / ffmpeg_capture.cpp

diff --git a/ffmpeg_capture.cpp b/ffmpeg_capture.cpp
index bbbb941065f90e4a896f65237836b34ffcd4738f..50b4fa45109362d637dfd69c5122725f69e3828d 100644 (file)
--- a/ffmpeg_capture.cpp
+++ b/ffmpeg_capture.cpp
@@ -288,6 +288,7 @@ void FFmpegCapture::producer_thread_func()
                        producer_thread_should_quit.sleep_for(seconds(1));
                        continue;
                }
+               should_interrupt = false;
                if (!play_video(pathname)) {
                        // Error.
                        fprintf(stderr, "Error when playing %s, sleeping one second and trying again...\n", pathname.c_str());
@@ -352,7 +353,7 @@ bool FFmpegCapture::play_video(const string &pathname)
        AVDictionary *opts = nullptr;
        av_dict_set(&opts, "fflags", "nobuffer", 0);
 
-       auto format_ctx = avformat_open_input_unique(pathname.c_str(), nullptr, &opts);
+       auto format_ctx = avformat_open_input_unique(pathname.c_str(), nullptr, &opts, AVIOInterruptCB{ &FFmpegCapture::interrupt_cb_thunk, this });
        if (format_ctx == nullptr) {
                fprintf(stderr, "%s: Error opening file\n", pathname.c_str());
                return false;
@@ -801,3 +802,13 @@ UniqueFrame FFmpegCapture::make_video_frame(const AVFrame *frame, const string &
 
        return video_frame;
 }
+
+int FFmpegCapture::interrupt_cb_thunk(void *unique)
+{
+       return reinterpret_cast<FFmpegCapture *>(unique)->interrupt_cb();
+}
+
+int FFmpegCapture::interrupt_cb()
+{
+       return should_interrupt.load();
+}