From 2c13cc9a565bff4718f0053e36f9c49f2dd3f90a Mon Sep 17 00:00:00 2001
From: Ronag <Ronag@362d55ac-95cf-4e76-9f9a-cbaa9c17b72d>
Date: Thu, 18 Aug 2011 21:50:25 +0000
Subject: [PATCH] 2.0 ffmper_producer: started refactoring into fix_meta_data
 method.

git-svn-id: https://casparcg.svn.sourceforge.net/svnroot/casparcg/server/branches/2.0.0.2@1220 362d55ac-95cf-4e76-9f9a-cbaa9c17b72d
---
 modules/ffmpeg/producer/util.cpp | 51 ++++++++++++++++++++++++++++++++
 modules/ffmpeg/producer/util.h   |  3 ++
 2 files changed, 54 insertions(+)

diff --git a/modules/ffmpeg/producer/util.cpp b/modules/ffmpeg/producer/util.cpp
index de20fe2ef..e52997a3e 100644
--- a/modules/ffmpeg/producer/util.cpp
+++ b/modules/ffmpeg/producer/util.cpp
@@ -2,6 +2,8 @@
 
 #include "util.h"
 
+#include "format/flv.h"
+
 #include <tbb/concurrent_unordered_map.h>
 #include <tbb/concurrent_queue.h>
 
@@ -14,6 +16,9 @@
 
 #include <tbb/parallel_for.h>
 
+#include <boost/filesystem.hpp>
+#include <boost/lexical_cast.hpp>
+
 #if defined(_MSC_VER)
 #pragma warning (push)
 #pragma warning (disable : 4244)
@@ -22,6 +27,7 @@ extern "C"
 {
 	#include <libswscale/swscale.h>
 	#include <libavcodec/avcodec.h>
+	#include <libavformat/avformat.h>
 }
 #if defined(_MSC_VER)
 #pragma warning (pop)
@@ -209,4 +215,49 @@ safe_ptr<core::write_frame> make_write_frame(const void* tag, const safe_ptr<AVF
 	}
 }
 
+bool is_sane_frame_rate(AVRational time_base)
+{
+	return true;
+}
+
+//TODO: Not finished
+void fix_meta_data(AVFormatContext& context)
+{
+	auto video_index = av_find_best_stream(&context, AVMEDIA_TYPE_VIDEO, -1, -1, 0, 0);
+	auto audio_index = av_find_best_stream(&context, AVMEDIA_TYPE_AUDIO, -1, -1, 0, 0);
+
+	if(video_index > -1)
+	{
+		auto& video_stream  = *context.streams[video_index];
+
+		if(video_stream.time_base.num == 1)
+			video_stream.time_base.num = static_cast<int>(std::pow(10.0, static_cast<int>(std::log10(static_cast<float>(video_stream.time_base.den)))-1));	
+					
+		if(boost::filesystem2::path(context.filename).extension() == ".flv")
+		{
+			try
+			{
+				//auto meta = read_flv_meta_info(context.filename);
+				//fps_ = boost::lexical_cast<double>(meta["framerate"]);
+				//video_stream.nb_frames = static_cast<int64_t>(boost::lexical_cast<double>(meta["duration"])*fps_);
+			}
+			catch(...){}
+		}
+		else
+		{
+			if(video_stream.nb_frames == 0)
+				video_stream.nb_frames = video_stream.duration;
+		}
+
+		if(!is_sane_frame_rate(video_stream.time_base))
+		{
+			if(audio_index > -1)
+			{
+				video_stream.time_base.num = video_stream.nb_frames;
+				video_stream.time_base.den = context.streams[audio_index]->duration / context.streams[audio_index]->codec->sample_rate;
+			}
+		}
+	}
+}
+
 }
\ No newline at end of file
diff --git a/modules/ffmpeg/producer/util.h b/modules/ffmpeg/producer/util.h
index 4a0951321..5d01bd195 100644
--- a/modules/ffmpeg/producer/util.h
+++ b/modules/ffmpeg/producer/util.h
@@ -11,6 +11,7 @@ extern "C"
 }
 
 struct AVFrame;
+struct AVFormatContext;
 
 namespace caspar {
 
@@ -30,4 +31,6 @@ core::pixel_format_desc		get_pixel_format_desc(PixelFormat pix_fmt, size_t width
 int							make_alpha_format(int format); // NOTE: Be careful about CASPAR_PIX_FMT_LUMA, change it to PIX_FMT_GRAY8 if you want to use the frame inside some ffmpeg function.
 safe_ptr<core::write_frame> make_write_frame(const void* tag, const safe_ptr<AVFrame>& decoded_frame, const safe_ptr<core::frame_factory>& frame_factory, int hints);
 
+void						fix_meta_data(AVFormatContext& context);
+
 }
\ No newline at end of file
-- 
2.39.2