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),
+ ycbcr_input_splitting(ycbcr_input_splitting),
+ type(type),
width(width),
height(height),
resource_pool(NULL)
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);
- pitch[0] = widths[0] = width;
- pitch[1] = widths[1] = width / ycbcr_format.chroma_subsampling_x;
- pitch[2] = widths[2] = width / ycbcr_format.chroma_subsampling_x;
-
- 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;
+ set_width(width);
+ set_height(height);
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);
+ }
}
YCbCrInput::~YCbCrInput()
{
- for (unsigned channel = 0; channel < 3; ++channel) {
- if (texture_num[channel] != 0) {
- resource_pool->release_2d_texture(texture_num[channel]);
- }
+ for (unsigned channel = 0; channel < num_channels; ++channel) {
+ possibly_release_texture(channel);
}
}
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();
- if (texture_num[channel] == 0) {
+ 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 {
+ 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) {
+ assert(type == GL_UNSIGNED_BYTE);
+ format = GL_RG;
+ internal_format = GL_RG8;
+ } else {
+ assert(type == GL_UNSIGNED_BYTE);
+ format = GL_RED;
+ internal_format = GL_R8;
+ }
+
// (Re-)upload the texture.
- texture_num[channel] = resource_pool->create_2d_texture(GL_R8, widths[channel], heights[channel]);
+ 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, GL_LINEAR);
check_error();
glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch[channel]);
check_error();
- glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, widths[channel], heights[channel], GL_RED, GL_UNSIGNED_BYTE, pixel_data[channel]);
+ 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();
check_error();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
check_error();
+ owns_texture[channel] = true;
} else {
glBindTexture(GL_TEXTURE_2D, texture_num[channel]);
check_error();
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;
+ uniform_tex_cb = *sampler_num + 1;
+ if (ycbcr_input_splitting == YCBCR_INPUT_PLANAR) {
+ uniform_tex_cr = *sampler_num + 2;
+ }
- *sampler_num += 3;
+ *sampler_num += num_channels;
}
string YCbCrInput::output_fragment_shader()
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) {
+ 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",
+ (fabs(ycbcr_format.cb_x_position - ycbcr_format.cr_x_position) < 1e-6));
+ frag_shader += buf;
+ } else {
+ frag_shader += "#define Y_CB_CR_SAME_TEXTURE 0\n#define CB_CR_SAME_TEXTURE 0\n";
+ }
+
frag_shader += read_file("ycbcr_input.frag");
return frag_shader;
}
void YCbCrInput::invalidate_pixel_data()
{
for (unsigned channel = 0; channel < 3; ++channel) {
- if (texture_num[channel] != 0) {
- resource_pool->release_2d_texture(texture_num[channel]);
- texture_num[channel] = 0;
- }
+ possibly_release_texture(channel);
}
}
return Effect::set_int(key, value);
}
+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