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

[movit] / ycbcr_input.h

diff --git a/ycbcr_input.h b/ycbcr_input.h
index 22208e006209de2430ab5a8ae0b4874ac74a7085..31ba42bcbbacb9daa9e3fd1cadd9a80b6dee4a19 100644 (file)
--- a/ycbcr_input.h
+++ b/ycbcr_input.h
@@ -1,10 +1,20 @@
 #ifndef _MOVIT_YCBCR_INPUT_H
 #define _MOVIT_YCBCR_INPUT_H 1
 
-// YCbCrInput is for handling planar or 4:4:4 interleaved 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.
+// YCbCrInput is for handling Y'CbCr (also sometimes, usually rather
+// imprecisely, called “YUV”), which is typically what you get from a video
+// decoder. It supports these formats:
+//
+//   * 8-bit planar Y'CbCr, possibly subsampled (e.g. 4:2:0).
+//   * 8-bit semiplanar Y'CbCr (Y' in one plane, CbCr in another),
+//     possibly subsampled.
+//   * 8-bit interleaved (chunked) Y'CbCr, no subsampling (4:4:4 only).
+//   * 10-bit interleaved (chunked) Y'CbCr packed into 32-bit words
+//     (10:10:10:2), no subsampling (4:4:4 only).
+//
+// For the former case, it upsamples planes as needed, using the default linear
+// upsampling OpenGL gives you. Note that YCbCr422InterleavedInput supports the
+// important special case of 8-bit 4:2:2 interleaved.
 
 #include <epoxy/gl.h>
 #include <assert.h>
@@ -20,9 +30,7 @@ namespace movit {
 
 class ResourcePool;
 
-// Whether the data is planar (Y', Cb and Cr in one texture each)
-// or not. Note that YCbCr422InterleavedInput supports the important special
-// case of 4:2:2 interleaved.
+// Whether the data is planar (Y', Cb and Cr in one texture each) or not.
 enum YCbCrInputSplitting {
        // The standard, default case; Y', Cb and Cr in one texture each.
        YCBCR_INPUT_PLANAR,
@@ -41,10 +49,13 @@ enum YCbCrInputSplitting {
 
 class YCbCrInput : public Input {
 public:
+       // Type can be GL_UNSIGNED_BYTE for 8-bit, or GL_UNSIGNED_INT_2_10_10_10_REV
+       // for 10-bit (YCBCR_INPUT_INTERLEAVED only).
        YCbCrInput(const ImageFormat &image_format,
                   const YCbCrFormat &ycbcr_format,
                   unsigned width, unsigned height,
-                  YCbCrInputSplitting ycbcr_input_splitting = YCBCR_INPUT_PLANAR);
+                  YCbCrInputSplitting ycbcr_input_splitting = YCBCR_INPUT_PLANAR,
+                  GLenum type = GL_UNSIGNED_BYTE);
        ~YCbCrInput();
 
        virtual std::string effect_type_id() const { return "YCbCrInput"; }
@@ -75,12 +86,22 @@ public:
        // 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(type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_2_10_10_10_REV);
                assert(channel >= 0 && channel < num_channels);
                this->pixel_data[channel] = pixel_data;
                this->pbos[channel] = pbo;
                invalidate_pixel_data();
        }
 
+       void set_pixel_data(unsigned channel, const uint32_t *pixel_data, GLuint pbo = 0)
+       {
+               assert(type == GL_UNSIGNED_INT_2_10_10_10_REV);
+               assert(channel == 0);
+               this->pixel_data[channel] = reinterpret_cast<const unsigned char *>(pixel_data);
+               this->pbos[channel] = pbo;
+               invalidate_pixel_data();
+       }
+
        void invalidate_pixel_data();
 
        // Note: Sets pitch to width, so even if your pitch is unchanged,
@@ -142,6 +163,7 @@ private:
        YCbCrFormat ycbcr_format;
        GLuint num_channels;
        YCbCrInputSplitting ycbcr_input_splitting;
+       GLenum type;
        GLuint pbos[3], texture_num[3];
        GLint uniform_tex_y, uniform_tex_cb, uniform_tex_cr;