-#include <string.h>
+#include <Eigen/Core>
+#include <Eigen/LU>
+#include <epoxy/gl.h>
#include <assert.h>
+#include <stdio.h>
+#include <string.h>
-#include "ycbcr_input.h"
+#include "effect_util.h"
+#include "resource_pool.h"
#include "util.h"
-#include "opengl.h"
+#include "ycbcr.h"
+#include "ycbcr_input.h"
+
+using namespace Eigen;
+using namespace std;
+
+namespace movit {
YCbCrInput::YCbCrInput(const ImageFormat &image_format,
const YCbCrFormat &ycbcr_format,
- unsigned width, unsigned height)
+ unsigned width, unsigned height,
+ YCbCrInputSplitting ycbcr_input_splitting,
+ GLenum type)
: image_format(image_format),
ycbcr_format(ycbcr_format),
- needs_update(false),
- needs_pbo_recreate(false),
- finalized(false),
+ ycbcr_input_splitting(ycbcr_input_splitting),
needs_mipmaps(false),
+ type(type),
width(width),
- height(height)
+ height(height),
+ resource_pool(NULL)
{
- pitch[0] = pitch[1] = pitch[2] = width;
+ pbos[0] = pbos[1] = pbos[2] = 0;
+ texture_num[0] = texture_num[1] = texture_num[2] = 0;
- assert(width % ycbcr_format.chroma_subsampling_x == 0);
- widths[0] = width;
- widths[1] = width / ycbcr_format.chroma_subsampling_x;
- widths[2] = width / ycbcr_format.chroma_subsampling_x;
+ set_width(width);
+ set_height(height);
- assert(height % ycbcr_format.chroma_subsampling_y == 0);
- heights[0] = height;
- 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;
+ owns_texture[0] = owns_texture[1] = owns_texture[2] = false;
+
+ register_uniform_sampler2d("tex_y", &uniform_tex_y);
+
+ if (ycbcr_input_splitting == YCBCR_INPUT_INTERLEAVED) {
+ num_channels = 1;
+ assert(ycbcr_format.chroma_subsampling_x == 1);
+ assert(ycbcr_format.chroma_subsampling_y == 1);
+ } else if (ycbcr_input_splitting == YCBCR_INPUT_SPLIT_Y_AND_CBCR) {
+ num_channels = 2;
+ register_uniform_sampler2d("tex_cbcr", &uniform_tex_cb);
+ } else {
+ assert(ycbcr_input_splitting == YCBCR_INPUT_PLANAR);
+ num_channels = 3;
+ register_uniform_sampler2d("tex_cb", &uniform_tex_cb);
+ register_uniform_sampler2d("tex_cr", &uniform_tex_cr);
+ }
register_int("needs_mipmaps", &needs_mipmaps);
}
-void YCbCrInput::finalize()
+YCbCrInput::~YCbCrInput()
{
- // Create PBOs to hold the textures holding the input image, and then the texture itself.
- glGenBuffers(3, pbos);
- check_error();
- 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();
+ for (unsigned channel = 0; channel < num_channels; ++channel) {
+ possibly_release_texture(channel);
}
-
- needs_update = false;
- finalized = true;
}
-
-void YCbCrInput::set_gl_state(GLuint glsl_program_num, const std::string& prefix, unsigned *sampler_num)
+
+void YCbCrInput::set_gl_state(GLuint glsl_program_num, const string& prefix, unsigned *sampler_num)
{
- for (unsigned channel = 0; channel < 3; ++channel) {
+ for (unsigned channel = 0; channel < num_channels; ++channel) {
glActiveTexture(GL_TEXTURE0 + *sampler_num + channel);
check_error();
- glBindTexture(GL_TEXTURE_2D, texture_num[channel]);
- check_error();
- if (needs_update || needs_pbo_recreate) {
- // 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();
+ if (texture_num[channel] == 0 && (pbos[channel] != 0 || pixel_data[channel] != NULL)) {
+ GLenum format, internal_format;
+ if (channel == 0 && ycbcr_input_splitting == YCBCR_INPUT_INTERLEAVED) {
+ if (type == GL_UNSIGNED_INT_2_10_10_10_REV) {
+ format = GL_RGBA;
+ internal_format = GL_RGB10_A2;
+ } else if (type == GL_UNSIGNED_SHORT) {
+ format = GL_RGB;
+ internal_format = GL_RGB16;
+ } else {
+ assert(type == GL_UNSIGNED_BYTE);
+ format = GL_RGB;
+ internal_format = GL_RGB8;
+ }
+ } else if (channel == 1 && ycbcr_input_splitting == YCBCR_INPUT_SPLIT_Y_AND_CBCR) {
+ format = GL_RG;
+ if (type == GL_UNSIGNED_SHORT) {
+ internal_format = GL_RG16;
+ } else {
+ assert(type == GL_UNSIGNED_BYTE);
+ internal_format = GL_RG8;
+ }
+ } else {
+ format = GL_RED;
+ if (type == GL_UNSIGNED_SHORT) {
+ internal_format = GL_R16;
+ } else {
+ assert(type == GL_UNSIGNED_BYTE);
+ internal_format = GL_R8;
+ }
}
- 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);
+ // (Re-)upload the texture.
+ texture_num[channel] = resource_pool->create_2d_texture(internal_format, widths[channel], heights[channel]);
+ glBindTexture(GL_TEXTURE_2D, texture_num[channel]);
+ check_error();
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, needs_mipmaps ? GL_LINEAR_MIPMAP_NEAREST : GL_LINEAR);
+ check_error();
+ glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbos[channel]);
+ check_error();
+ 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], format, type, pixel_data[channel]);
check_error();
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
check_error();
+ if (needs_mipmaps) {
+ glGenerateMipmap(GL_TEXTURE_2D);
+ check_error();
+ }
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
check_error();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
check_error();
- glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
+ owns_texture[channel] = true;
+ } else {
+ glBindTexture(GL_TEXTURE_2D, texture_num[channel]);
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);
- set_uniform_int(glsl_program_num, prefix, "tex_cr", *sampler_num + 2);
+ uniform_tex_y = *sampler_num + 0;
+ if (ycbcr_input_splitting != YCBCR_INPUT_INTERLEAVED) {
+ uniform_tex_cb = *sampler_num + 1;
+ }
+ if (ycbcr_input_splitting == YCBCR_INPUT_PLANAR) {
+ uniform_tex_cr = *sampler_num + 2;
+ }
- *sampler_num += 3;
- needs_update = false;
- needs_pbo_recreate = false;
+ *sampler_num += num_channels;
}
-std::string YCbCrInput::output_fragment_shader()
+string YCbCrInput::output_fragment_shader()
{
- float coeff[3], offset[3], scale[3];
-
- switch (ycbcr_format.luma_coefficients) {
- case YCBCR_REC_601:
- // Rec. 601, page 2.
- coeff[0] = 0.299;
- coeff[1] = 0.587;
- coeff[2] = 0.114;
- break;
-
- case YCBCR_REC_709:
- // Rec. 709, page 19.
- coeff[0] = 0.2126;
- coeff[1] = 0.7152;
- coeff[2] = 0.0722;
- break;
- default:
- assert(false);
+ float offset[3];
+ Matrix3d ycbcr_to_rgb;
+ compute_ycbcr_matrix(ycbcr_format, offset, &ycbcr_to_rgb, type);
+
+ string frag_shader;
+
+ frag_shader = output_glsl_mat3("PREFIX(inv_ycbcr_matrix)", ycbcr_to_rgb);
+ frag_shader += output_glsl_vec3("PREFIX(offset)", offset[0], offset[1], offset[2]);
+
+ float cb_offset_x = compute_chroma_offset(
+ ycbcr_format.cb_x_position, ycbcr_format.chroma_subsampling_x, widths[1]);
+ float cb_offset_y = compute_chroma_offset(
+ ycbcr_format.cb_y_position, ycbcr_format.chroma_subsampling_y, heights[1]);
+ frag_shader += output_glsl_vec2("PREFIX(cb_offset)", cb_offset_x, cb_offset_y);
+
+ float cr_offset_x = compute_chroma_offset(
+ ycbcr_format.cr_x_position, ycbcr_format.chroma_subsampling_x, widths[2]);
+ float cr_offset_y = compute_chroma_offset(
+ ycbcr_format.cr_y_position, ycbcr_format.chroma_subsampling_y, heights[2]);
+ frag_shader += output_glsl_vec2("PREFIX(cr_offset)", cr_offset_x, cr_offset_y);
+
+ if (ycbcr_input_splitting == YCBCR_INPUT_INTERLEAVED) {
+ frag_shader += "#define Y_CB_CR_SAME_TEXTURE 1\n";
+ } else if (ycbcr_input_splitting == YCBCR_INPUT_SPLIT_Y_AND_CBCR) {
+ bool cb_cr_offsets_equal =
+ (fabs(ycbcr_format.cb_x_position - ycbcr_format.cr_x_position) < 1e-6) &&
+ (fabs(ycbcr_format.cb_y_position - ycbcr_format.cr_y_position) < 1e-6);
+ char buf[256];
+ snprintf(buf, sizeof(buf), "#define Y_CB_CR_SAME_TEXTURE 0\n#define CB_CR_SAME_TEXTURE 1\n#define CB_CR_OFFSETS_EQUAL %d\n",
+ cb_cr_offsets_equal);
+ frag_shader += buf;
+ } else {
+ frag_shader += "#define Y_CB_CR_SAME_TEXTURE 0\n#define CB_CR_SAME_TEXTURE 0\n";
}
- if (ycbcr_format.full_range) {
- offset[0] = 0.0 / 255.0;
- offset[1] = 128.0 / 255.0;
- offset[2] = 128.0 / 255.0;
+ frag_shader += read_file("ycbcr_input.frag");
+ return frag_shader;
+}
- scale[0] = 1.0;
- scale[1] = 1.0;
- scale[2] = 1.0;
- } else {
- // Rec. 601, page 4; Rec. 709, page 19.
- offset[0] = 16.0 / 255.0;
- offset[1] = 128.0 / 255.0;
- offset[2] = 128.0 / 255.0;
-
- scale[0] = 255.0 / 219.0;
- scale[1] = 255.0 / 224.0;
- scale[2] = 255.0 / 224.0;
+void YCbCrInput::invalidate_pixel_data()
+{
+ for (unsigned channel = 0; channel < 3; ++channel) {
+ possibly_release_texture(channel);
}
+}
- // Matrix to convert RGB to YCbCr. See e.g. Rec. 601.
- Matrix3x3 rgb_to_ycbcr;
- rgb_to_ycbcr[0] = coeff[0];
- rgb_to_ycbcr[3] = coeff[1];
- rgb_to_ycbcr[6] = coeff[2];
-
- float cb_fac = (224.0 / 219.0) / (coeff[0] + coeff[1] + 1.0f - coeff[2]);
- rgb_to_ycbcr[1] = -coeff[0] * cb_fac;
- rgb_to_ycbcr[4] = -coeff[1] * cb_fac;
- rgb_to_ycbcr[7] = (1.0f - coeff[2]) * cb_fac;
-
- float cr_fac = (224.0 / 219.0) / (1.0f - coeff[0] + coeff[1] + coeff[2]);
- rgb_to_ycbcr[2] = (1.0f - coeff[0]) * cr_fac;
- rgb_to_ycbcr[5] = -coeff[1] * cr_fac;
- rgb_to_ycbcr[8] = -coeff[2] * cr_fac;
-
- // Inverting the matrix gives us what we need to go from YCbCr back to RGB.
- Matrix3x3 ycbcr_to_rgb;
- invert_3x3_matrix(rgb_to_ycbcr, ycbcr_to_rgb);
-
- std::string frag_shader;
-
- char buf[1024];
- sprintf(buf,
- "const mat3 PREFIX(inv_ycbcr_matrix) = mat3(\n"
- " %.8f, %.8f, %.8f,\n"
- " %.8f, %.8f, %.8f,\n"
- " %.8f, %.8f, %.8f);\n",
- ycbcr_to_rgb[0], ycbcr_to_rgb[1], ycbcr_to_rgb[2],
- ycbcr_to_rgb[3], ycbcr_to_rgb[4], ycbcr_to_rgb[5],
- ycbcr_to_rgb[6], ycbcr_to_rgb[7], ycbcr_to_rgb[8]);
- frag_shader = buf;
-
- sprintf(buf, "const vec3 PREFIX(offset) = vec3(%.8f, %.8f, %.8f);\n",
- offset[0], offset[1], offset[2]);
- frag_shader += buf;
-
- sprintf(buf, "const vec3 PREFIX(scale) = vec3(%.8f, %.8f, %.8f);\n",
- scale[0], scale[1], scale[2]);
- frag_shader += buf;
-
- // OpenGL has texel center in (0.5, 0.5), but different formats have
- // chroma in various other places. If luma samples are X, the chroma
- // sample is *, and subsampling is 3x3, the situation with chroma
- // center in (0.5, 0.5) looks approximately like this:
- //
- // X X
- // *
- // X X
- //
- // If, on the other hand, chroma center is in (0.0, 0.5) (common
- // for e.g. MPEG-4), the figure changes to:
- //
- // X X
- // *
- // X X
- //
- // Obviously, the chroma plane here needs to be moved to the left,
- // which means _adding_ 0.5 to the texture coordinates when sampling
- // chroma.
- float chroma_offset_x = (0.5f - ycbcr_format.chroma_x_position) / widths[1];
- float chroma_offset_y = (0.5f - ycbcr_format.chroma_y_position) / heights[1];
- sprintf(buf, "const vec2 PREFIX(chroma_offset) = vec2(%.8f, %.8f);\n",
- chroma_offset_x, chroma_offset_y);
- frag_shader += buf;
+bool YCbCrInput::set_int(const std::string& key, int value)
+{
+ if (key == "needs_mipmaps") {
+ if (ycbcr_input_splitting != YCBCR_INPUT_INTERLEAVED && value != 0) {
+ // We do not currently support this.
+ return false;
+ }
+ }
+ return Effect::set_int(key, value);
+}
- frag_shader += read_file("ycbcr_input.frag");
- return frag_shader;
+void YCbCrInput::possibly_release_texture(unsigned channel)
+{
+ if (texture_num[channel] != 0 && owns_texture[channel]) {
+ resource_pool->release_2d_texture(texture_num[channel]);
+ texture_num[channel] = 0;
+ owns_texture[channel] = false;
+ }
}
+
+} // namespace movit
projects / movit / blobdiff