From b51bd77d005d21e50b9093fc4fbfddf407c8c00c Mon Sep 17 00:00:00 2001
From: Rodrigo Braz Monteiro <zeratul@cellosoft.com>
Date: Fri, 14 Apr 2006 06:13:29 +0000
Subject: [PATCH] very early LAVC Audio provider

Originally committed to SVN as r319.
---
 core/audio_provider_lavc.cpp | 56 ++++++++++++++++++++++++++++++++++--
 core/audio_provider_lavc.h   | 25 ++++++++++++++++
 core/video_provider_lavc.cpp |  3 --
 3 files changed, 79 insertions(+), 5 deletions(-)

diff --git a/core/audio_provider_lavc.cpp b/core/audio_provider_lavc.cpp
index 171fd0fb9..c25bee088 100644
--- a/core/audio_provider_lavc.cpp
+++ b/core/audio_provider_lavc.cpp
@@ -45,16 +45,32 @@
 //////////////
 // Constructor
 LAVCAudioProvider::LAVCAudioProvider(wxString _filename) {
+	// Set filename
 	filename = _filename;
 
-	// TODO
+	// Init lavc variables
+	codecContext = NULL;
+	formatContext = NULL;
+	codec = NULL;
+	stream = NULL;
+	frame = NULL;
+
+	// Register types
+	static bool avRegistered = false;
+	if (!avRegistered) {
+		av_register_all();
+		avRegistered = true;
+	}
+
+	// Load audio
+	LoadAudio(filename);
 }
 
 
 //////////////
 // Destructor
 LAVCAudioProvider::~LAVCAudioProvider() {
-	// TODO
+	Close();
 }
 
 
@@ -65,6 +81,42 @@ wxString LAVCAudioProvider::GetFilename() {
 }
 
 
+//////////////
+// Load audio
+void LAVCAudioProvider::LoadAudio(wxString file) {
+	// Close first
+	Close();
+
+	try {
+		// TODO
+	}
+
+	// Catch errors
+	catch (...) {
+		Close();
+		throw;
+	}
+}
+
+
+//////////
+// Unload
+void LAVCAudioProvider::Close() {
+	// Clean frame
+	if (frame) av_free(frame);
+	frame = NULL;
+	
+	// Close codec context
+	if (codec && codecContext) avcodec_close(codecContext);
+	codecContext = NULL;
+	codec = NULL;
+
+	// Close format context
+	if (formatContext) av_close_input_file(formatContext);
+	formatContext = NULL;
+}
+
+
 /////////////
 // Get audio
 void LAVCAudioProvider::GetAudio(void *buf, __int64 start, __int64 count) {
diff --git a/core/audio_provider_lavc.h b/core/audio_provider_lavc.h
index 21864361e..d74586fa0 100644
--- a/core/audio_provider_lavc.h
+++ b/core/audio_provider_lavc.h
@@ -37,8 +37,21 @@
 #pragma once
 
 
+///////////////////////////////////
+// Auto-enable LAVC on non-windows
+#ifndef __WINDOWS__
+#ifndef USE_LAVC
+#define USE_LAVC
+#endif
+#endif
+
+
 ///////////
 // Headers
+#ifdef USE_LAVC
+#define EMULATE_INTTYPES
+#include <ffmpeg/avcodec.h>
+#include <ffmpeg/avformat.h>
 #include <wx/wxprec.h>
 #include "audio_provider.h"
 
@@ -49,6 +62,16 @@ class LAVCAudioProvider : public AudioProvider {
 private:
 	wxString filename;
 
+	AVFormatContext *formatContext;
+	AVCodecContext *codecContext;
+	AVStream *stream;
+	AVCodec *codec;
+	AVFrame *frame;
+	int audStream;
+
+	void LoadAudio(wxString file);
+	void Close();
+
 public:
 	LAVCAudioProvider(wxString _filename);
 	~LAVCAudioProvider();
@@ -58,3 +81,5 @@ public:
 	void GetAudio(void *buf, __int64 start, __int64 count);
 	void GetWaveForm(int *min,int *peak,__int64 start,int w,int h,int samples,float scale);
 };
+
+#endif
diff --git a/core/video_provider_lavc.cpp b/core/video_provider_lavc.cpp
index 2df218537..37e546770 100644
--- a/core/video_provider_lavc.cpp
+++ b/core/video_provider_lavc.cpp
@@ -48,9 +48,6 @@
 ///////////////
 // Constructor
 LAVCVideoProvider::LAVCVideoProvider(wxString filename, wxString subfilename) {
-	char temp[1024];
-	strcpy(temp,subfilename.mb_str(wxConvUTF8));
-
 	// Init variables
 	codecContext = NULL;
 	formatContext = NULL;