Combine the Nageru and Futatabi files that are identical.

[nageru] / shared / ffmpeg_raii.h

diff --git a/shared/ffmpeg_raii.h b/shared/ffmpeg_raii.h
new file mode 100644 (file)
index 0000000..33d2334
--- /dev/null
+++ b/shared/ffmpeg_raii.h
@@ -0,0 +1,80 @@
+#ifndef _FFMPEG_RAII_H
+#define _FFMPEG_RAII_H 1
+
+// Some helpers to make RAII versions of FFmpeg objects.
+// The cleanup functions don't interact all that well with unique_ptr,
+// so things get a bit messy and verbose, but overall it's worth it to ensure
+// we never leak things by accident in error paths.
+//
+// This does not cover any of the types that can actually be declared as
+// a unique_ptr with no helper functions for deleter.
+
+#include <memory>
+
+struct AVCodec;
+struct AVCodecContext;
+struct AVCodecParameters;
+struct AVDictionary;
+struct AVFormatContext;
+struct AVFrame;
+struct AVInputFormat;
+struct SwsContext;
+typedef struct AVIOInterruptCB AVIOInterruptCB;
+
+// AVFormatContext
+struct avformat_close_input_unique {
+       void operator() (AVFormatContext *format_ctx) const;
+};
+
+typedef std::unique_ptr<AVFormatContext, avformat_close_input_unique>
+       AVFormatContextWithCloser;
+
+AVFormatContextWithCloser avformat_open_input_unique(
+       const char *pathname, AVInputFormat *fmt,
+       AVDictionary **options);
+
+AVFormatContextWithCloser avformat_open_input_unique(
+       const char *pathname, AVInputFormat *fmt,
+       AVDictionary **options,
+       const AVIOInterruptCB &interrupt_cb);
+
+
+// AVCodecContext
+struct avcodec_free_context_unique {
+       void operator() (AVCodecContext *ctx) const;
+};
+
+typedef std::unique_ptr<AVCodecContext, avcodec_free_context_unique>
+       AVCodecContextWithDeleter;
+
+AVCodecContextWithDeleter avcodec_alloc_context3_unique(const AVCodec *codec);
+
+
+// AVCodecParameters
+struct avcodec_parameters_free_unique {
+       void operator() (AVCodecParameters *codec_par) const;
+};
+
+typedef std::unique_ptr<AVCodecParameters, avcodec_parameters_free_unique>
+       AVCodecParametersWithDeleter;
+
+
+// AVFrame
+struct av_frame_free_unique {
+       void operator() (AVFrame *frame) const;
+};
+
+typedef std::unique_ptr<AVFrame, av_frame_free_unique>
+       AVFrameWithDeleter;
+
+AVFrameWithDeleter av_frame_alloc_unique();
+
+// SwsContext
+struct sws_free_context_unique {
+       void operator() (SwsContext *context) const;
+};
+
+typedef std::unique_ptr<SwsContext, sws_free_context_unique>
+       SwsContextWithDeleter;
+
+#endif  // !defined(_FFMPEG_RAII_H)