Allow YCbCrInput to change input format after finalize.

[movit] / ycbcr_input.h

diff --git a/ycbcr_input.h b/ycbcr_input.h
index 566f8286841da3aa1f82b68074b326083d047324..bb51049753215448bb899c68afd0b0eb7d343431 100644 (file)
--- a/ycbcr_input.h
+++ b/ycbcr_input.h
@@ -161,6 +161,16 @@ public:
                this->owns_texture[channel] = false;
        }
 
+       // You can change the Y'CbCr format freely, also after finalize,
+       // although with one limitation: If Cb and Cr come from the same
+       // texture and their offsets offsets are the same (ie., within 1e-6)
+       // when finalizing, they most continue to be so forever, as this
+       // optimization is compiled into the shader.
+       //
+       // If you change subsampling parameters, you'll need to call
+       // set_width() / set_height() again after this.
+       void change_ycbcr_format(const YCbCrFormat &ycbcr_format);
+
        virtual void inform_added(EffectChain *chain)
        {
                resource_pool = chain->get_resource_pool();
@@ -180,6 +190,10 @@ private:
        GLenum type;
        GLuint pbos[3], texture_num[3];
        GLint uniform_tex_y, uniform_tex_cb, uniform_tex_cr;
+       Eigen::Matrix3d uniform_ycbcr_matrix;
+       float uniform_offset[3];
+       Point2D uniform_cb_offset, uniform_cr_offset;
+       bool cb_cr_offsets_equal;
 
        unsigned width, height, widths[3], heights[3];
        const unsigned char *pixel_data[3];