Support videos with JPEG color range in GPU YUV convert path.

cc/output/gl_renderer.cc

Index: cc/output/gl_renderer.cc
diff --git a/cc/output/gl_renderer.cc b/cc/output/gl_renderer.cc
index bb1ecbf6bc61f6691d5eb5fd55690d0448eee2ae..8e60f944d4f6f23cf033f15f2f7c619473fe99cf 100644
--- a/cc/output/gl_renderer.cc
+++ b/cc/output/gl_renderer.cc
@@ -1777,9 +1777,12 @@ void GLRenderer::DrawYUVVideoQuad(const DrawingFrame* frame,
   // These values are magic numbers that are used in the transformation from YUV
   // to RGB color values.  They are taken from the following webpage:
   // http://www.fourcc.org/fccyvrgb.php
-  float yuv_to_rgb[9] = {1.164f, 1.164f, 1.164f, 0.0f, -.391f,
-                         2.018f, 1.596f, -.813f, 0.0f, };
-  GLC(gl_, gl_->UniformMatrix3fv(yuv_matrix_location, 1, 0, yuv_to_rgb));
+  float yuv_to_rgb_rec601[9] = {
+      1.164f, 1.164f, 1.164f, 0.0f, -.391f, 2.018f, 1.596f, -.813f, 0.0f,
+  };
+  float yuv_to_rgb_rec601_jpeg[9] = {
+      1.f, 1.f, 1.f, 0.0f, -.34414f, 1.772f, 1.402f, -.71414f, 0.0f,
+  };
 
   // These values map to 16, 128, and 128 respectively, and are computed
   // as a fraction over 256 (e.g. 16 / 256 = 0.0625).
@@ -1787,7 +1790,30 @@ void GLRenderer::DrawYUVVideoQuad(const DrawingFrame* frame,
   //   Y - 16   : Gives 16 values of head and footroom for overshooting
   //   U - 128  : Turns unsigned U into signed U [-128,127]
   //   V - 128  : Turns unsigned V into signed V [-128,127]
-  float yuv_adjust[3] = {-0.0625f, -0.5f, -0.5f, };
+  float yuv_adjust_rec601[3] = {
+      -0.0625f, -0.5f, -0.5f,
+  };
+
+  // Same as above, but without the head and footroom.
+  float yuv_adjust_rec601_jpeg[3] = {
+      0.0f, -0.5f, -0.5f,
+  };
+
+  float* yuv_to_rgb = NULL;
+  float* yuv_adjust = NULL;
+
+  switch (quad->color_space) {
+    case YUVVideoDrawQuad::REC_601:
+      yuv_to_rgb = yuv_to_rgb_rec601;
+      yuv_adjust = yuv_adjust_rec601;
+      break;
+    case YUVVideoDrawQuad::REC_601_JPEG:
+      yuv_to_rgb = yuv_to_rgb_rec601_jpeg;
+      yuv_adjust = yuv_adjust_rec601_jpeg;
+      break;
+  }
+
+  GLC(gl_, gl_->UniformMatrix3fv(yuv_matrix_location, 1, 0, yuv_to_rgb));
   GLC(gl_, gl_->Uniform3fv(yuv_adj_location, 1, yuv_adjust));
 
   SetShaderOpacity(quad->opacity(), alpha_location);