Add input support for packed 10-bit Y'CbCr.

[movit] / ycbcr_input.cpp

diff --git a/ycbcr_input.cpp b/ycbcr_input.cpp
index b0ca69291198fc69b7badc37b35b30d92741930c..f8df0c11bd687bcd862896dcd5b9a72e86e52a09 100644 (file)
--- a/ycbcr_input.cpp
+++ b/ycbcr_input.cpp
@@ -19,10 +19,12 @@ namespace movit {
 YCbCrInput::YCbCrInput(const ImageFormat &image_format,
                        const YCbCrFormat &ycbcr_format,
                        unsigned width, unsigned height,
-                       YCbCrInputSplitting ycbcr_input_splitting)
+                       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)
@@ -38,7 +40,11 @@ YCbCrInput::YCbCrInput(const ImageFormat &image_format,
 
        register_uniform_sampler2d("tex_y", &uniform_tex_y);
 
-       if (ycbcr_input_splitting == YCBCR_INPUT_SPLIT_Y_AND_CBCR) {
+       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 {
@@ -64,10 +70,21 @@ void YCbCrInput::set_gl_state(GLuint glsl_program_num, const string& prefix, uns
 
                if (texture_num[channel] == 0 && (pbos[channel] != 0 || pixel_data[channel] != NULL)) {
                        GLenum format, internal_format;
-                       if (channel == 1 && ycbcr_input_splitting == YCBCR_INPUT_SPLIT_Y_AND_CBCR) {
+                       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;
                        }
@@ -84,7 +101,7 @@ void YCbCrInput::set_gl_state(GLuint glsl_program_num, const string& prefix, uns
                        check_error();
                        glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch[channel]);
                        check_error();
-                       glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, widths[channel], heights[channel], format, 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();
@@ -135,13 +152,15 @@ 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_SPLIT_Y_AND_CBCR) {
+       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 CB_CR_SAME_TEXTURE 1\n#define CB_CR_OFFSETS_EQUAL %d\n",
+               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 CB_CR_SAME_TEXTURE 0\n";
+               frag_shader += "#define Y_CB_CR_SAME_TEXTURE 0\n#define CB_CR_SAME_TEXTURE 0\n";
        }
 
        frag_shader += read_file("ycbcr_input.frag");