-#ifndef _YCBCR_INPUT_H
-#define _YCBCR_INPUT_H 1
+#ifndef _MOVIT_YCBCR_INPUT_H
+#define _MOVIT_YCBCR_INPUT_H 1
// YCbCrInput is for handling planar 8-bit Y'CbCr (also sometimes, usually rather
// imprecisely, called “YUV”), which is typically what you get from a video decoder.
// It upsamples planes as needed, using the default linear upsampling OpenGL gives you.
-#include <GL/glew.h>
+#include <epoxy/gl.h>
#include <assert.h>
#include <string>
#include "effect.h"
+#include "effect_chain.h"
#include "image_format.h"
#include "input.h"
+#include "ycbcr.h"
-struct YCbCrFormat {
- // Which formula for Y' to use.
- YCbCrLumaCoefficients luma_coefficients;
+namespace movit {
- // If true, assume Y'CbCr coefficients are full-range, ie. go from 0 to 255
- // instead of the limited 220/225 steps in classic MPEG. For instance,
- // JPEG uses the Rec. 601 luma coefficients, but full range.
- bool full_range;
-
- // Sampling factors for chroma components. For no subsampling (4:4:4),
- // set both to 1.
- unsigned chroma_subsampling_x, chroma_subsampling_y;
-
- // Positioning of the chroma samples. MPEG-1 and JPEG is (0.5, 0.5);
- // MPEG-2 and newer typically are (0.0, 0.5).
- float cb_x_position, cb_y_position;
- float cr_x_position, cr_y_position;
-};
+class ResourcePool;
class YCbCrInput : public Input {
public:
virtual std::string effect_type_id() const { return "YCbCrInput"; }
- // Create the texture itself. We cannot do this in the constructor,
- // because we don't necessarily know all the settings (sRGB texture,
- // mipmap generation) at that point.
- void finalize();
-
virtual bool can_output_linear_gamma() const { return false; }
virtual AlphaHandling alpha_handling() const { return OUTPUT_BLANK_ALPHA; }
unsigned get_height() const { return height; }
Colorspace get_color_space() const { return image_format.color_space; }
GammaCurve get_gamma_curve() const { return image_format.gamma_curve; }
+ virtual bool can_supply_mipmaps() const { return false; }
// Tells the input where to fetch the actual pixel data. Note that if you change
// this data, you must either call set_pixel_data() again (using the same pointer
// is fine), or invalidate_pixel_data(). Otherwise, the texture won't be re-uploaded
// on subsequent frames.
- void set_pixel_data(unsigned channel, const unsigned char *pixel_data)
+ //
+ // The data can either be a regular pointer (if pbo==0), or a byte offset
+ // into a PBO. The latter will allow you to start uploading the texture data
+ // asynchronously to the GPU, if you have any CPU-intensive work between the
+ // call to set_pixel_data() and the actual rendering. In either case,
+ // the pointer (and PBO, if set) has to be valid at the time of the render call.
+ void set_pixel_data(unsigned channel, const unsigned char *pixel_data, GLuint pbo = 0)
{
assert(channel >= 0 && channel < 3);
this->pixel_data[channel] = pixel_data;
+ this->pbos[channel] = pbo;
invalidate_pixel_data();
}
- void invalidate_pixel_data()
- {
- needs_update = true;
- }
+ void invalidate_pixel_data();
void set_pitch(unsigned channel, unsigned pitch) {
assert(channel >= 0 && channel < 3);
- if (this->pitch[channel] != pitch) {
- this->pitch[channel] = pitch;
- needs_pbo_recreate = true;
- }
+ this->pitch[channel] = pitch;
+ invalidate_pixel_data();
}
+ virtual void inform_added(EffectChain *chain)
+ {
+ resource_pool = chain->get_resource_pool();
+ }
+
+ bool set_int(const std::string& key, int value);
+
private:
ImageFormat image_format;
YCbCrFormat ycbcr_format;
GLuint pbos[3], texture_num[3];
- bool needs_update, needs_pbo_recreate, finalized;
-
- int needs_mipmaps;
+ GLint uniform_tex_y, uniform_tex_cb, uniform_tex_cr;
unsigned width, height, widths[3], heights[3];
const unsigned char *pixel_data[3];
unsigned pitch[3];
+ ResourcePool *resource_pool;
};
-#endif // !defined(_YCBCR_INPUT_H)
+} // namespace movit
+
+#endif // !defined(_MOVIT_YCBCR_INPUT_H)