From 2c3880579176cd210553aacf27a6ae62d5edae75 Mon Sep 17 00:00:00 2001
From: "Unknown W. Brackets" <checkins@unknownbrackets.org>
Date: Wed, 1 Jan 2014 20:47:10 -0800
Subject: [PATCH] Retry opening the context if it fails at first.

This fixes #4550, the hang on the crash video in FF4.
---
 Core/HW/MediaEngine.cpp | 55 ++++++++++++++++++++++-------------------
 Core/HW/MediaEngine.h   |  1 +
 2 files changed, 31 insertions(+), 25 deletions(-)

diff --git a/Core/HW/MediaEngine.cpp b/Core/HW/MediaEngine.cpp
index 79f4fcfd7e..4f079536c2 100644
--- a/Core/HW/MediaEngine.cpp
+++ b/Core/HW/MediaEngine.cpp
@@ -152,34 +152,11 @@ MediaEngine::~MediaEngine() {
 }
 
 void MediaEngine::closeMedia() {
-#ifdef USE_FFMPEG
-	if (m_buffer)
-		av_free(m_buffer);
-	if (m_pFrameRGB)
-		av_free(m_pFrameRGB);
-	if (m_pFrame)
-		av_free(m_pFrame);
-	if (m_pIOContext && m_pIOContext->buffer)
-		av_free(m_pIOContext->buffer);
-	if (m_pIOContext)
-		av_free(m_pIOContext);
-	if (m_pCodecCtx)
-		avcodec_close(m_pCodecCtx);
-	if (m_pFormatCtx)
-		avformat_close_input(&m_pFormatCtx);
-#endif // USE_FFMPEG
+	closeContext();
 	if (m_pdata)
 		delete m_pdata;
 	if (m_demux)
 		delete m_demux;
-	m_buffer = 0;
-#ifdef USE_FFMPEG
-	m_pFrame = 0;
-	m_pFrameRGB = 0;
-	m_pIOContext = 0;
-	m_pCodecCtx = 0;
-	m_pFormatCtx = 0;
-#endif
 	m_pdata = 0;
 	m_demux = 0;
 	AT3Close(&m_audioContext);
@@ -267,8 +244,10 @@ bool MediaEngine::openContext() {
 	if (avformat_open_input((AVFormatContext**)&m_pFormatCtx, NULL, NULL, NULL) != 0)
 		return false;
 
-	if (avformat_find_stream_info(m_pFormatCtx, NULL) < 0)
+	if (avformat_find_stream_info(m_pFormatCtx, NULL) < 0) {
+		closeContext();
 		return false;
+	}
 
 	if (m_videoStream >= (int)m_pFormatCtx->nb_streams) {
 		WARN_LOG_REPORT(ME, "Bad video stream %d", m_videoStream);
@@ -310,6 +289,32 @@ bool MediaEngine::openContext() {
 	return true;
 }
 
+void MediaEngine::closeContext()
+{
+#ifdef USE_FFMPEG
+	if (m_buffer)
+		av_free(m_buffer);
+	if (m_pFrameRGB)
+		av_free(m_pFrameRGB);
+	if (m_pFrame)
+		av_free(m_pFrame);
+	if (m_pIOContext && m_pIOContext->buffer)
+		av_free(m_pIOContext->buffer);
+	if (m_pIOContext)
+		av_free(m_pIOContext);
+	if (m_pCodecCtx)
+		avcodec_close(m_pCodecCtx);
+	if (m_pFormatCtx)
+		avformat_close_input(&m_pFormatCtx);
+	m_pFrame = 0;
+	m_pFrameRGB = 0;
+	m_pIOContext = 0;
+	m_pCodecCtx = 0;
+	m_pFormatCtx = 0;
+#endif
+	m_buffer = 0;
+}
+
 bool MediaEngine::loadStream(u8* buffer, int readSize, int RingbufferSize)
 {
 	closeMedia();
diff --git a/Core/HW/MediaEngine.h b/Core/HW/MediaEngine.h
index 2d1fd55d23..3969f5901a 100644
--- a/Core/HW/MediaEngine.h
+++ b/Core/HW/MediaEngine.h
@@ -60,6 +60,7 @@ public:
 	bool loadStream(u8* buffer, int readSize, int RingbufferSize);
 	// open the mpeg context
 	bool openContext();
+	void closeContext();
 
 	// Returns number of packets actually added. I guess the buffer might be full.
 	int addStreamData(u8* buffer, int addSize);