-#include <string.h>
-#include <assert.h>
-
+#include <Eigen/Core>
#include <Eigen/LU>
+#include <GL/glew.h>
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
-#include "ycbcr_input.h"
+#include "effect_util.h"
#include "util.h"
-#include "opengl.h"
+#include "ycbcr_input.h"
using namespace Eigen;
: image_format(image_format),
ycbcr_format(ycbcr_format),
needs_update(false),
- needs_pbo_recreate(false),
finalized(false),
needs_mipmaps(false),
width(width),
heights[1] = height / ycbcr_format.chroma_subsampling_y;
heights[2] = height / ycbcr_format.chroma_subsampling_y;
+ pixel_data[0] = pixel_data[1] = pixel_data[2] = NULL;
+
register_int("needs_mipmaps", &needs_mipmaps);
}
YCbCrInput::~YCbCrInput()
{
- if (pbos[0] != 0) {
- glDeleteBuffers(3, pbos);
- check_error();
- }
if (texture_num[0] != 0) {
glDeleteTextures(3, texture_num);
check_error();
void YCbCrInput::finalize()
{
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
- check_error();
-
- // Create PBOs to hold the textures holding the input image, and then the texture itself.
- glGenBuffers(3, pbos);
- check_error();
+ // Create the textures themselves.
glGenTextures(3, texture_num);
check_error();
for (unsigned channel = 0; channel < 3; ++channel) {
- glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbos[channel]);
- check_error();
- glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, pitch[channel] * heights[channel], NULL, GL_STREAM_DRAW);
- check_error();
- glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
- check_error();
-
glBindTexture(GL_TEXTURE_2D, texture_num[channel]);
check_error();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
check_error();
- glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch[channel]);
- check_error();
glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE8, widths[channel], heights[channel], 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, NULL);
check_error();
- glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
- check_error();
}
needs_update = true;
glBindTexture(GL_TEXTURE_2D, texture_num[channel]);
check_error();
- if (needs_update || needs_pbo_recreate) {
+ if (needs_update) {
+ // Re-upload the texture.
// Copy the pixel data into the PBO.
glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbos[channel]);
check_error();
-
- if (needs_pbo_recreate) {
- // The pitch has changed; we need to reallocate this PBO.
- glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, pitch[channel] * heights[channel], NULL, GL_STREAM_DRAW);
- check_error();
- }
-
- void *mapped_pbo = glMapBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, GL_WRITE_ONLY);
- memcpy(mapped_pbo, pixel_data[channel], pitch[channel] * heights[channel]);
-
- glUnmapBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB);
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
check_error();
-
- // Re-upload the texture from the PBO.
glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch[channel]);
check_error();
- glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, widths[channel], heights[channel], GL_LUMINANCE, GL_UNSIGNED_BYTE, BUFFER_OFFSET(0));
+ glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, widths[channel], heights[channel], GL_LUMINANCE, GL_UNSIGNED_BYTE, pixel_data[channel]);
check_error();
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
check_error();
check_error();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
check_error();
- glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
- check_error();
}
}
+ glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
+ check_error();
+
// Bind samplers.
set_uniform_int(glsl_program_num, prefix, "tex_y", *sampler_num + 0);
set_uniform_int(glsl_program_num, prefix, "tex_cb", *sampler_num + 1);
*sampler_num += 3;
needs_update = false;
- needs_pbo_recreate = false;
}
std::string YCbCrInput::output_fragment_shader()
coeff[1] = 0.7152;
coeff[2] = 0.0722;
break;
+
+ case YCBCR_REC_2020:
+ // Rec. 2020, page 4.
+ coeff[0] = 0.2627;
+ coeff[1] = 0.6780;
+ coeff[2] = 0.0593;
+ break;
+
default:
assert(false);
}
scale[1] = 1.0;
scale[2] = 1.0;
} else {
- // Rec. 601, page 4; Rec. 709, page 19.
+ // Rec. 601, page 4; Rec. 709, page 19; Rec. 2020, page 4.
offset[0] = 16.0 / 255.0;
offset[1] = 128.0 / 255.0;
offset[2] = 128.0 / 255.0;