From 93395bd24e21d9555fbe69d7bae89f9e22c49d33 Mon Sep 17 00:00:00 2001
From: Povilas Kanapickas <povilas@radix.lt>
Date: Tue, 17 Sep 2019 17:21:01 +0300
Subject: [PATCH] genesys: Add wrapper to retrieve raw channel value from image

---
 backend/genesys_image.cc | 6 ++++++
 backend/genesys_image.h  | 1 +
 2 files changed, 7 insertions(+)

diff --git a/backend/genesys_image.cc b/backend/genesys_image.cc
index bfeed1a28..7ece725a5 100644
--- a/backend/genesys_image.cc
+++ b/backend/genesys_image.cc
@@ -83,6 +83,11 @@ RawPixel Image::get_raw_pixel(std::size_t x, std::size_t y) const
     return get_raw_pixel_from_row(get_row_ptr(y), x, format_);
 }
 
+std::uint16_t Image::get_raw_channel(std::size_t x, std::size_t y, unsigned channel) const
+{
+    return get_raw_channel_from_row(get_row_ptr(y), x, channel, format_);
+}
+
 void Image::set_raw_pixel(std::size_t x, std::size_t y, const RawPixel& pixel)
 {
     set_raw_pixel_to_row(get_row_ptr(y), x, pixel, format_);
@@ -93,6 +98,7 @@ void Image::resize(std::size_t width, std::size_t height, PixelFormat format)
     width_ = width;
     height_ = height;
     format_ = format;
+    row_bytes_ = get_pixel_row_bytes(format_, width_);
     data_.resize(get_row_bytes() * height);
 }
 
diff --git a/backend/genesys_image.h b/backend/genesys_image.h
index 0dbc6b00c..07dfee3be 100644
--- a/backend/genesys_image.h
+++ b/backend/genesys_image.h
@@ -65,6 +65,7 @@ public:
     void set_pixel(std::size_t x, std::size_t y, const Pixel& pixel);
 
     RawPixel get_raw_pixel(std::size_t x, std::size_t y) const;
+    std::uint16_t get_raw_channel(std::size_t x, std::size_t y, unsigned channel) const;
     void set_raw_pixel(std::size_t x, std::size_t y, const RawPixel& pixel);
 
     void resize(std::size_t width, std::size_t height, PixelFormat format);