From f9694b7d4f1648a0fa984e7cc428bbc9eea86ca0 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Wed, 11 Sep 2013 16:11:47 +0100
Subject: ffms2 library for video loader

---
 rotord/src/libavwrapper.h | 64 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)

(limited to 'rotord/src/libavwrapper.h')

diff --git a/rotord/src/libavwrapper.h b/rotord/src/libavwrapper.h
index d30ea95..870815f 100644
--- a/rotord/src/libavwrapper.h
+++ b/rotord/src/libavwrapper.h
@@ -69,6 +69,8 @@ extern "C" {
 #include <math.h>
 #include <vector>
 
+#include <ffms.h>
+
 
 
 namespace libav {
@@ -154,6 +156,68 @@ namespace libav {
 
     };
 
+    class ffms2_decoder
+    {
+        public:
+            ffms2_decoder(){
+                maybeInitFFMpegLib();
+                pixfmts[0] = FFMS_GetPixFmt("rgb24");
+                pixfmts[1] = -1;
+                h=0;
+                w=0;
+                videosource=NULL;
+                loaded=false;
+                errinfo.Buffer      = errmsg;
+                errinfo.BufferSize  = sizeof(errmsg);
+                errinfo.ErrorType   = FFMS_ERROR_SUCCESS;
+                errinfo.SubType     = FFMS_ERROR_SUCCESS;
+            }
+            ~ffms2_decoder(){
+                cleanup();
+            }
+            void cleanup();
+            bool open(const std::string& filename);
+            float getFrameRate(){
+                if (loaded) return (((float)videoprops->FPSNumerator)/((float)videoprops->FPSDenominator));
+                else return -1.0f;
+            }
+            int getNumberOfFrames(){
+                if (loaded) return videoprops->NumFrames;
+                else return -1;
+            }
+            int getNumberOfChannels(){
+                return 3; //this is what we convert to
+            }
+            int getWidth(){
+                return w;
+            }
+            int getHeight(){
+                return h;
+            }
+            bool fetchFrame(int width,int height,int wanted){
+                if (FFMS_SetOutputFormatV2(videosource, pixfmts, width, height, FFMS_RESIZER_BICUBIC, &errinfo)) {
+                    std::cerr<<"ffmpegsource: "<<errinfo.Buffer<<std::endl;
+                    return false;
+                }
+                frame = FFMS_GetFrame(videosource, wanted%videoprops->NumFrames, &errinfo);
+                if (frame == NULL) {
+                    std::cerr<<"ffmpegsource: "<<errinfo.Buffer<<std::endl;
+                    return false;
+                }
+                return true;
+
+            }
+
+            FFMS_VideoSource *videosource;
+            FFMS_VideoProperties *videoprops;
+            FFMS_Frame *frame;
+            FFMS_ErrorInfo errinfo;
+            char errmsg[1024];
+            int pixfmts[2];
+            bool loaded;
+            int h,w;
+    };
+
 /*
     // TODO - finish refactoring based on
     // http://svn.gnumonks.org/trunk/21c3-video/ffmpeg/ffmpeg-0.4.9-pre1/output_example.c
-- 
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