Support audio-only FFmpeg inputs. Somewhat wonky, though.

[nageru] / ffmpeg_raii.cpp

diff --git a/ffmpeg_raii.cpp b/ffmpeg_raii.cpp
index 042959780c0c5a05f55570c45717b1371430d723..746e03d19122da0cd11ad70735670b9b9d318af5 100644 (file)
--- a/ffmpeg_raii.cpp
+++ b/ffmpeg_raii.cpp
@@ -3,58 +3,75 @@
 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(AVFormatContext *format_ctx)
+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)
+       const char *pathname, AVInputFormat *fmt,
+       AVDictionary **options)
 {
-       AVFormatContext *format_ctx = nullptr;
+       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, avformat_close_input_unique);
+       return AVFormatContextWithCloser(format_ctx);
 }
 
-
 // AVCodecContext
 
-void avcodec_free_context_unique(AVCodecContext *codec_ctx)
+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), avcodec_free_context_unique);
+       return AVCodecContextWithDeleter(avcodec_alloc_context3(codec));
 }
 
 
 // AVCodecParameters
 
-void avcodec_parameters_free_unique(AVCodecParameters *codec_par)
+void avcodec_parameters_free_unique::operator() (AVCodecParameters *codec_par) const
 {
        avcodec_parameters_free(&codec_par);
 }
 
-
 // AVFrame
 
-void av_frame_free_unique(AVFrame *frame)
+void av_frame_free_unique::operator() (AVFrame *frame) const
 {
        av_frame_free(&frame);
 }
 
 AVFrameWithDeleter av_frame_alloc_unique()
 {
-       return AVFrameWithDeleter(av_frame_alloc(), av_frame_free_unique);
+       return AVFrameWithDeleter(av_frame_alloc());
 }
 
+// SwsContext
+
+void sws_free_context_unique::operator() (SwsContext *context) const
+{
+       sws_freeContext(context);
+}