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Code Packages Releases Wiki Activity

Various fixes in android sample NativeActivity.

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This commit is contained in:
Alexander Smorkalov
2013-07-05 14:08:37 +04:00
parent e905c81ccc
commit 69b308a368
4 changed files with 22 additions and 8 deletions
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samples/android/native-activity/jni/native.cpp
+16 -5
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@@ -78,18 +78,29 @@ static void engine_draw_frame(Engine* engine, const cv::Mat& frame)
return;
}
void* pixels = buffer.bits;
int32_t* pixels = (int32_t*)buffer.bits;
int left_indent = (buffer.width-frame.cols)/2;
int top_indent = (buffer.height-frame.rows)/2;
for (int yy = top_indent; yy < std::min(frame.rows+top_indent, buffer.height); yy++)
if (top_indent > 0)
{
unsigned char* line = (unsigned char*)pixels + left_indent*4*sizeof(unsigned char);
size_t line_size = std::min(frame.cols, buffer.width)*4*sizeof(unsigned char);
memset(pixels, 0, top_indent*buffer.stride*sizeof(int32_t));
pixels += top_indent*buffer.stride;
}
for (int yy = 0; yy < frame.rows; yy++)
{
if (left_indent > 0)
{
memset(pixels, 0, left_indent*sizeof(int32_t));
memset(pixels+left_indent+frame.cols, 0, (buffer.stride-frame.cols-left_indent)*sizeof(int32_t));
}
int32_t* line = pixels + left_indent;
size_t line_size = frame.cols*4*sizeof(unsigned char);
memcpy(line, frame.ptr<unsigned char>(yy), line_size);
// go to next line
pixels = (int32_t*)pixels + buffer.stride;
pixels += buffer.stride;
}
ANativeWindow_unlockAndPost(engine->app->window);
}