X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=shared%2Fffmpeg_raii.cpp;fp=shared%2Fffmpeg_raii.cpp;h=746e03d19122da0cd11ad70735670b9b9d318af5;hb=b563b8903fa84bb7fd62d7d0b84b70cb26843dbf;hp=0000000000000000000000000000000000000000;hpb=9b7d691b4cc5db7dbfc18c82e86c1207fcac4722;p=nageru

diff --git a/shared/ffmpeg_raii.cpp b/shared/ffmpeg_raii.cpp
new file mode 100644
index 0000000..746e03d
--- /dev/null
+++ b/shared/ffmpeg_raii.cpp
@@ -0,0 +1,77 @@
+#include "ffmpeg_raii.h"
+
+extern "C" {
+#include <libavcodec/avcodec.h>
+#include <libavformat/avformat.h>
+#include <libavutil/dict.h>
+#include <libavutil/frame.h>
+#include <libswscale/swscale.h>
+}
+
+using namespace std;
+
+// AVFormatContext
+
+void avformat_close_input_unique::operator() (AVFormatContext *format_ctx) const
+{
+	avformat_close_input(&format_ctx);
+}
+
+AVFormatContextWithCloser avformat_open_input_unique(
+	const char *pathname, AVInputFormat *fmt,
+	AVDictionary **options)
+{
+	return avformat_open_input_unique(pathname, fmt, options, AVIOInterruptCB{ nullptr, nullptr });
+}
+
+AVFormatContextWithCloser avformat_open_input_unique(
+	const char *pathname, AVInputFormat *fmt,
+	AVDictionary **options,
+	const AVIOInterruptCB &interrupt_cb)
+{
+	AVFormatContext *format_ctx = avformat_alloc_context();
+	format_ctx->interrupt_callback = interrupt_cb;
+	if (avformat_open_input(&format_ctx, pathname, fmt, options) != 0) {
+		format_ctx = nullptr;
+	}
+	return AVFormatContextWithCloser(format_ctx);
+}
+
+// AVCodecContext
+
+void avcodec_free_context_unique::operator() (AVCodecContext *codec_ctx) const
+{
+	avcodec_free_context(&codec_ctx);
+}
+
+AVCodecContextWithDeleter avcodec_alloc_context3_unique(const AVCodec *codec)
+{
+	return AVCodecContextWithDeleter(avcodec_alloc_context3(codec));
+}
+
+
+// AVCodecParameters
+
+void avcodec_parameters_free_unique::operator() (AVCodecParameters *codec_par) const
+{
+	avcodec_parameters_free(&codec_par);
+}
+
+// AVFrame
+
+void av_frame_free_unique::operator() (AVFrame *frame) const
+{
+	av_frame_free(&frame);
+}
+
+AVFrameWithDeleter av_frame_alloc_unique()
+{
+	return AVFrameWithDeleter(av_frame_alloc());
+}
+
+// SwsContext
+
+void sws_free_context_unique::operator() (SwsContext *context) const
+{
+	sws_freeContext(context);
+}