Let FlatInput take in float data (sort of kludgy, though). Also remove the get_*...
[movit] / flat_input.h
1 #ifndef _FLAT_INPUT_H
2 #define _FLAT_INPUT_H 1
3
4 #include "input.h"
5
6 // A FlatInput is the normal, “classic” case of an input, where everything
7 // comes from a single 2D array with chunky pixels.
8 class FlatInput : public Input {
9 public:
10         FlatInput(ImageFormat format, MovitPixelFormat pixel_format, GLenum type, unsigned width, unsigned height);
11
12         virtual std::string effect_type_id() const { return "FlatInput"; }
13
14         // Create the texture itself. We cannot do this in the constructor,
15         // because we don't necessarily know all the settings (sRGB texture,
16         // mipmap generation) at that point.
17         void finalize();
18
19         // TODO: Check that we actually have the required extension.
20         virtual bool can_output_linear_gamma() const {
21                 return (image_format.gamma_curve == GAMMA_LINEAR ||
22                         image_format.gamma_curve == GAMMA_sRGB);
23         }
24
25         std::string output_fragment_shader();
26
27         // Uploads the texture if it has changed since last time.
28         void set_gl_state(GLuint glsl_program_num, const std::string& prefix, unsigned *sampler_num);
29
30         unsigned get_width() const { return width; }
31         unsigned get_height() const { return height; }
32         ColorSpace get_color_space() const { return image_format.color_space; }
33         GammaCurve get_gamma_curve() const { return image_format.gamma_curve; }
34
35         // Tells the input where to fetch the actual pixel data. Note that if you change
36         // this data, you must either call set_pixel_data() again (using the same pointer
37         // is fine), or invalidate_pixel_data(). Otherwise, the texture won't be re-uploaded
38         // on subsequent frames.
39         void set_pixel_data(const unsigned char *pixel_data)
40         {
41                 assert(this->type == GL_UNSIGNED_BYTE);
42                 this->pixel_data = pixel_data;
43                 invalidate_pixel_data();
44         }
45
46         void set_pixel_data(const float *pixel_data)
47         {
48                 assert(this->type == GL_FLOAT);
49                 this->pixel_data = pixel_data;
50                 invalidate_pixel_data();
51         }
52
53         void invalidate_pixel_data()
54         {
55                 needs_update = true;
56         }
57
58         void set_pitch(unsigned pitch) {
59                 assert(!finalized);
60                 this->pitch = pitch;
61         }
62
63 private:
64         ImageFormat image_format;
65         MovitPixelFormat pixel_format;
66         GLenum format, type;
67         GLuint pbo, texture_num;
68         bool needs_update, finalized;
69         int output_linear_gamma, needs_mipmaps;
70         unsigned width, height, pitch, bytes_per_pixel;
71         const void *pixel_data;
72 };
73
74 #endif // !defined(_FLAT_INPUT_H)