]> git.sesse.net Git - movit/blob - flat_input.h
needs_update should be set even after we have created the texture, since we have...
[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, 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                 this->pixel_data = pixel_data;
42                 invalidate_pixel_data();
43         }
44
45         void invalidate_pixel_data()
46         {
47                 needs_update = true;
48         }
49
50         const unsigned char *get_pixel_data() const
51         {
52                 return pixel_data;
53         }
54
55         void set_pitch(unsigned pitch) {
56                 assert(!finalized);
57                 this->pitch = pitch;
58         }
59
60         unsigned get_pitch() {
61                 return pitch;
62         }
63
64 private:
65         ImageFormat image_format;
66         MovitPixelFormat pixel_format;
67         GLenum format;
68         GLuint pbo, texture_num;
69         bool needs_update, finalized;
70         int output_linear_gamma, needs_mipmaps;
71         unsigned width, height, pitch, bytes_per_pixel;
72         const unsigned char *pixel_data;
73 };
74
75 #endif // !defined(_FLAT_INPUT_H)