From b0914c9c39bd1226f1789cc3b53b05cb87797527 Mon Sep 17 00:00:00 2001
From: zhangmeng <775834166@qq.com>
Date: 星期一, 13 五月 2019 13:54:47 +0800
Subject: [PATCH] shrink scale buffer

---
 csrc/wrapper.cpp |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/csrc/wrapper.cpp b/csrc/wrapper.cpp
index ead51a0..7894fa2 100644
--- a/csrc/wrapper.cpp
+++ b/csrc/wrapper.cpp
@@ -84,11 +84,12 @@
                 auto dec_ctx = in->getCodecContext();
                 if(bridge_)delete bridge_;
 
+                scale_w_ = scale_w_ > dec_ctx->width ? dec_ctx->width : scale_w_;
+                scale_h_ = scale_h_ > dec_ctx->height ? dec_ctx->height : scale_h_;
                 AVPixelFormat pix_fmt = AV_PIX_FMT_BGR24;
                 bridge_ = new cvbridge(
                         dec_ctx->width, dec_ctx->height, dec_ctx->pix_fmt,
-                        scale_w_?scale_w_:dec_ctx->width, scale_h_?scale_h_:dec_ctx->height, pix_fmt,
-                        scale_f_);
+                        scale_w_, scale_h_, pix_fmt, scale_f_);
     
             }
             if (!flag){
@@ -235,11 +236,12 @@
         pic_bgr24 pic;
         if(bridge_){
             AVFrame *frm = frame->getAVFrame();
-            unsigned char *data = (unsigned char*)malloc(frm->width * frm->height * 3);
+            pic.w = scale_w_;
+            pic.h = scale_h_;
+
+            unsigned char *data = (unsigned char*)malloc(pic.w * pic.h * 3);
             bridge_->copyPicture(data, frm);
             pic.data = data;
-            pic.w = scale_w_ ? scale_w_ : frm->width;
-            pic.h = scale_h_ ? scale_h_ : frm->height;
         }
         if(func_dec_){
             func_dec_(pic.data, pic.w, pic.h);

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