Add plumbing for video pixel formats with JPEG color range.

media/base/yuv_convert.h

Index: media/base/yuv_convert.h
diff --git a/media/base/yuv_convert.h b/media/base/yuv_convert.h
index 8f64c79689a3dfaf33a1944d23d4e1ac66655f6b..04407819417c3923b4eac83a7cbe6ab5e1970169 100644
--- a/media/base/yuv_convert.h
+++ b/media/base/yuv_convert.h
@@ -28,6 +28,11 @@ enum YUVType {
   YV12 = 1,  // YV12 is half width and half height chroma channels.
 };
 
+enum YUVRange {
+  MPEG,  // [16,235] Y channel, [16,239] U/V

[Sergey Ulanov, 2013/12/02 21:49:09]

nit: Maybe call it YUV_RANGE_MPEG and YUV_RANGE_JPEG? Also it might be better to
call them YUV_RANGE_RESTRICTED and YUV_RANGE_FULL?

[rileya (GONE FROM CHROMIUM), 2013/12/02 23:10:30]

It's possible that a different range may eventually exist, which would make
RESTRICTED ambiguous, but that's not the case currently and rather unlikely, so
I like RESTRICTED/FULL as more informative names. Done.

+  JPEG,  // Full [0,255] color range for all channels
+};
+
 // Mirror means flip the image horizontally, as in looking in a mirror.
 // Rotate happens after mirroring.
 enum Rotate {
@@ -62,7 +67,8 @@ MEDIA_EXPORT void ConvertYUVToRGB32(const uint8* yplane,
                                     int ystride,
                                     int uvstride,
                                     int rgbstride,
-                                    YUVType yuv_type);
+                                    YUVType yuv_type,
+                                    YUVRange yuv_range);
 
 // Convert a frame of YUVA to 32 bit ARGB.
 // Pass in YV12A
@@ -77,7 +83,8 @@ MEDIA_EXPORT void ConvertYUVAToARGB(const uint8* yplane,
                                     int uvstride,
                                     int astride,
                                     int rgbstride,
-                                    YUVType yuv_type);
+                                    YUVType yuv_type,
+                                    YUVRange yuv_range);
 
 // Scale a frame of YUV to 32 bit ARGB.
 // Supports rotation and mirroring.
@@ -93,6 +100,7 @@ MEDIA_EXPORT void ScaleYUVToRGB32(const uint8* yplane,
                                   int uvstride,
                                   int rgbstride,
                                   YUVType yuv_type,
+                                  YUVRange yuv_range,
                                   Rotate view_rotate,
                                   ScaleFilter filter);