Move some stuff inside Texture.

[dcpomatic.git] / src / wx / gl_video_view.cc

diff --git a/src/wx/gl_video_view.cc b/src/wx/gl_video_view.cc
index 7fb387f53132d2368dabcb960d38d0b39dcf332b..d646441b4e70193ea60a2df6dce2ca2726183433 100644 (file)
--- a/src/wx/gl_video_view.cc
+++ b/src/wx/gl_video_view.cc
@@ -74,7 +74,6 @@ check_gl_error (char const * last)
 GLVideoView::GLVideoView (FilmViewer* viewer, wxWindow *parent)
        : VideoView (viewer)
        , _context (nullptr)
-       , _have_storage (false)
        , _vsync_enabled (false)
        , _playing (false)
        , _one_shot (false)
@@ -494,29 +493,15 @@ GLVideoView::set_image (shared_ptr<const PlayerVideo> pv)
        /* XXX: video range conversion */
        /* XXX: subs */
 
-       if (image->size() != _video_size) {
-               _have_storage = false;
-       }
-
-       _video_size = image->size ();
-       glPixelStorei (GL_UNPACK_ALIGNMENT, _optimise_for_j2k ? 2 : 1);
-       check_gl_error ("glPixelStorei");
-
-       auto const format = _optimise_for_j2k ? GL_UNSIGNED_SHORT : GL_UNSIGNED_BYTE;
-
-       if (_have_storage) {
-               glTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, _video_size->width, _video_size->height, GL_RGB, format, image->data()[0]);
-               check_gl_error ("glTexSubImage2D");
-       } else {
-               glTexImage2D (GL_TEXTURE_2D, 0, _optimise_for_j2k ? GL_RGBA12 : GL_RGBA8, _video_size->width, _video_size->height, 0, GL_RGB, format, image->data()[0]);
-               check_gl_error ("glTexImage2D");
+       auto const changed = _video_texture->set (image);
 
+       if (changed) {
                auto const canvas_size = _canvas_size.load();
                int const canvas_width = canvas_size.GetWidth();
                int const canvas_height = canvas_size.GetHeight();
 
-               float const image_x = float(_video_size->width) / canvas_width;
-               float const image_y = float(_video_size->height) / canvas_height;
+               float const image_x = float(image->size().width) / canvas_width;
+               float const image_y = float(image->size().height) / canvas_height;
 
                auto x_pixels_to_gl = [canvas_width](int x) {
                        return (x * 2.0f / canvas_width) - 1.0f;
@@ -549,8 +534,6 @@ GLVideoView::set_image (shared_ptr<const PlayerVideo> pv)
                /* Set the vertex shader's input data (GL_ARRAY_BUFFER) */
                glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
                check_gl_error ("glBufferData");
-
-               _have_storage = true;
        }
 
        glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
@@ -665,7 +648,7 @@ try
        _vsync_enabled = true;
 #endif
 
-       _video_texture.reset(new Texture());
+       _video_texture.reset(new Texture(_optimise_for_j2k ? 2 : 1));
        _video_texture->bind();
 
        while (true) {
@@ -714,7 +697,8 @@ GLVideoView::request_one_shot ()
 }
 
 
-Texture::Texture ()
+Texture::Texture (GLint unpack_alignment)
+       : _unpack_alignment (unpack_alignment)
 {
        glGenTextures (1, &_name);
        check_gl_error ("glGenTextures");
@@ -734,3 +718,27 @@ Texture::bind ()
        check_gl_error ("glBindTexture");
 }
 
+
+bool
+Texture::set (shared_ptr<const Image> image)
+{
+       auto const create = !_size || image->size() != _size;
+       _size = image->size();
+
+       glPixelStorei (GL_UNPACK_ALIGNMENT, _unpack_alignment);
+       check_gl_error ("glPixelStorei");
+
+       auto const format = image->pixel_format() == AV_PIX_FMT_RGB24 ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT;
+       auto const internal_format = image->pixel_format() == AV_PIX_FMT_RGB24 ? GL_RGBA8 : GL_RGBA12;
+
+       if (create) {
+               glTexImage2D (GL_TEXTURE_2D, 0, internal_format, _size->width, _size->height, 0, GL_RGB, format, image->data()[0]);
+               check_gl_error ("glTexImage2D");
+       } else {
+               glTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, _size->width, _size->height, GL_RGB, format, image->data()[0]);
+               check_gl_error ("glTexSubImage2D");
+       }
+
+       return create;
+}
+