From a338cd531c460c0b3e829217f1f91f0156bcc6a7 Mon Sep 17 00:00:00 2001
From: houxiao <houxiao@454eff88-639b-444f-9e54-f578c98de674>
Date: 星期三, 12 四月 2017 13:20:30 +0800
Subject: [PATCH] new getFaceImages api

---
 VisitFace/RtspNativeCodec/app/src/main/cpp/FaceCache.cpp |  140 +++++++++++++++++++++++++++++++++++++++-------
 1 files changed, 119 insertions(+), 21 deletions(-)

diff --git a/VisitFace/RtspNativeCodec/app/src/main/cpp/FaceCache.cpp b/VisitFace/RtspNativeCodec/app/src/main/cpp/FaceCache.cpp
index 0b8e658..3b1797f 100644
--- a/VisitFace/RtspNativeCodec/app/src/main/cpp/FaceCache.cpp
+++ b/VisitFace/RtspNativeCodec/app/src/main/cpp/FaceCache.cpp
@@ -5,6 +5,16 @@
 #include <logger.h>
 #include <Logger/src/logger.hpp>
 
+#include <opencv/cv.h>
+#include <opencv/cxcore.h>
+#include <opencv/highgui.h>
+
+#include <vector>
+
+#include "PbFaceList.pb.h"
+
+#include <libyuv.h>
+
 struct FcPmBreackerContext
 {
 	uint8_t frameYUV[1920*1080*4];
@@ -12,25 +22,47 @@
 	
 	uint8_t frameRGB[1920*1080*4];
 	size_t frameRGBSize;
+
+    size_t width;
+    size_t height;
 	
 	st_ff_vect_t faceFeatures;
 	
 	bool dataAvailable;
 	
-	FcPmBreackerContext() : frameYUV(), frameYUVSize(0), frameRGB(), frameRGBSize(0), faceFeatures(), dataAvailable(false)
+	FcPmBreackerContext() :
+            frameYUV(), frameYUVSize(0), frameRGB(), frameRGBSize(0),
+            faceFeatures(), width(0), height(0), dataAvailable(false)
 	{
 	}
 	
 	void reset()
 	{
 		frameYUVSize = 0;
-		frameRGBSize = 0;
+        frameRGBSize = 0;
+        width = 0;
+        height = 0;
 		dataAvailable = false;
 		faceFeatures.clear();
 	}
 	
 	bool convertYUV420ToRGB()
 	{
+#define SUBSAMPLE(v, a) ((((v) + (a) - 1)) / (a))
+
+        int src_height = height;
+        int src_width = width;
+        const uint8* src_y = (const uint8*)(frameYUV);
+        const uint8* src_u = (const uint8*)(src_y + (src_height * src_width));
+        const uint8* src_v = (const uint8*)(src_u + (src_height * src_width / 4));
+
+        libyuv::I420ToRGB24(src_y, src_width,
+                           src_u, SUBSAMPLE(src_width, 2),
+                           src_v, SUBSAMPLE(src_width, 2),
+                           frameRGB, 3 * src_width,
+                           src_width, src_height);
+        frameRGBSize = src_height * src_width * 3;
+        return true;
 	}
 };
 
@@ -43,7 +75,7 @@
 	ctx->faceFeatures = faceFeatures;
 	
 	ctx->dataAvailable &= true;
-	return false;
+	return true;
 }
 
 bool fc_pm_breaker_frame(const PipeMaterial* pm, void* args)
@@ -63,13 +95,16 @@
 		return false;
 	}
 
-	ctx->frameYUVSize = lastFrame->buffSize;
+    ctx->frameYUVSize = lastFrame->buffSize;
+    ctx->width = lastFrame->width;
+    ctx->height = lastFrame->height;
 	memcpy(ctx->frameYUV, lastFrame->buffer, ctx->frameYUVSize);
 	
 	ctx->dataAvailable &= true;
-	return false;
+	return true;
 }
 
+#ifdef USE_ST_SDK
 FaceCache::FaceCache() : _ctx(new FcPmBreackerContext)
 {
 }
@@ -78,10 +113,14 @@
 {
 	delete (FcPmBreackerContext*)_ctx;
 }
+#endif
 
 // returns count of face
 int FaceCache::cachePm(const PipeMaterial& pm)
 {
+	if (_ctx == nullptr)
+		_ctx = new FcPmBreackerContext;
+	
 	FcPmBreackerContext& ctx(*(FcPmBreackerContext*)_ctx);
 	ctx.reset();
 	ctx.dataAvailable = true;
@@ -94,25 +133,84 @@
 		return 0;
 }
 
-bool FaceCache::getFaceListPb(uint8_t* buffer, size_t& buffSize)
+bool FaceCache::getFaceListPb(uint8_t* buffer, size_t& buffMaxSize)
 {
-	return false;
+    FcPmBreackerContext& ctx(*(FcPmBreackerContext*)_ctx);
+    if (!ctx.dataAvailable)
+        return false;
+	
+	PbFaceList pbFaceList;
+    pbFaceList.set_magic(pbFaceList.magic());
+    pbFaceList.set_image_count(ctx.faceFeatures.size());
+	pbFaceList.set_src_width(ctx.width);
+	pbFaceList.set_src_height(ctx.height);
+	
+    cv::Mat yMat(cv::Size(ctx.width, ctx.height), CV_8UC1, ctx.frameYUV);
+
+    for (int i = 0; i < ctx.faceFeatures.size(); i++)
+    {
+        const FaceRect& faceRect(ctx.faceFeatures[i].rect);
+        cv::Mat roiMat(yMat, cv::Rect(faceRect.leftTop.x, faceRect.leftTop.y, faceRect.rightBottom.x - faceRect.leftTop.x, faceRect.rightBottom.y - faceRect.leftTop.y));
+        
+		PbFaceList_FaceListImage pbFaceListImage;
+		pbFaceListImage.set_idx(i);
+		pbFaceListImage.set_size(roiMat.elemSize());
+		pbFaceListImage.set_type(PbFaceList_FaceListImage_ImageType_IT_Y);
+		pbFaceListImage.set_width(roiMat.cols);
+		pbFaceListImage.set_height(roiMat.rows);
+		pbFaceListImage.set_top_left_x(faceRect.leftTop.x);
+		pbFaceListImage.set_top_left_y(faceRect.leftTop.y);
+		
+		pbFaceListImage.add_img(roiMat.ptr(), roiMat.total() * roiMat.elemSize());
+    }
+
+	size_t s = pbFaceList.ByteSize();
+	buffMaxSize = std::min(s, buffMaxSize);
+	pbFaceList.SerializeToArray(buffer, buffMaxSize);
+
+    return buffMaxSize > 0;
 }
 
-bool FaceCache::getFaceListImage(int* buffIdx, size_t& count, uint8_t* buffImg, size_t& buffImgSize)
+bool FaceCache::getFaceListImage(std::vector<NativeImgIdx>& imgIdxes, uint8_t* buffImg, size_t& buffImgMaxSize)
 {
-	return false;
-}
+    FcPmBreackerContext& ctx(*(FcPmBreackerContext*)_ctx);
 
-bool FaceCache::extractFace()
-{
-	FcPmBreackerContext& ctx(*(FcPmBreackerContext*)_ctx);
-	
-	if (ctx.frameRGBSize == 0)
-	{
-		if (! ctx.convertYUV420ToRGB())
-			return false;
-	}
-	
-	
+    if (ctx.frameRGBSize == 0)
+    {
+        //#todo should optimize not convert the whole image
+        if (! ctx.convertYUV420ToRGB())
+            return false;
+    }
+
+    imgIdxes.clear();
+	size_t offset = 0;
+
+    cv::Mat rgbMat(cv::Size(ctx.width, ctx.height), CV_8UC3, ctx.frameRGB);
+    for (st_ff_vect_t::const_iterator ffiter = ctx.faceFeatures.begin(); ffiter != ctx.faceFeatures.end(); ++ffiter)
+    {
+        const FaceRect& faceRect(ffiter->rect);
+        cv::Mat roiMat(rgbMat, cv::Rect(faceRect.leftTop.x, faceRect.leftTop.y, faceRect.rightBottom.x - faceRect.leftTop.x, faceRect.rightBottom.y - faceRect.leftTop.y));
+
+        NativeImgIdx imgidx;
+        imgidx.offset = offset;
+        imgidx.size = roiMat.total() * roiMat.elemSize();
+        imgidx.type = MB_Frame::MBFT_RGB;
+        imgidx.width = roiMat.cols;
+        imgidx.height = roiMat.rows;
+
+        const size_t newSize = imgidx.offset + imgidx.size;
+
+		//isContinuous
+		if (newSize > buffImgMaxSize)
+        {
+            LOG_ERROR << "FaceCache::getFaceListImage buffImgMaxSize truncated" << LOG_ENDL;
+            return false;
+        }
+
+        memcpy(buffImg + imgidx.offset, roiMat.ptr(), imgidx.size);
+        imgIdxes.push_back(imgidx);
+        offset = newSize;
+    }
+
+    return true;
 }

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