0.9.4

ChangeLog

@@ -1,3 +1,12 @@
+version 0.9.4:
+
+- Modified alpha plane encoding to allow progressive display and
+  streaming encoding. This change is incompatible, so images
+  containing alpha from the previous versions of the format cannot be
+  decoded.
+
+- Added 4:2:2 and 4:2:0 chroma formats with MPEG2 chroma sample position.
+
 version 0.9.3:
 
 - Fixed small palette PNG.

README

@@ -91,6 +91,10 @@ as input.
   with the '-keepmetadata' option. For JPEG input, EXIF, ICCP and XMP
   are copied. For PNG input, ICCP is copied.
 
+- Objective comparisons: the JCTVC encoder is tuned for PSNR only, not
+  for SSIM, so you should use PSNR when making objective comparison
+  with other formats. x265 is tuned by default for SSIM.
+
 3) BPG decoder
 --------------
 
@@ -130,7 +134,11 @@ into it. Stylesheets are supported (the 'id' and 'class' attributes
 are preserved). The 'width' and 'height' attributes are supported only
 with pixel units.
 
-asm.js gives an interesting speed boost, so we hope that more browser
+The image data is downloaded with the XMLHttpRequest object. So the
+BPG images and the BPG Javascript decoder must be in the same domain
+unless Cross-Origin Resource Sharing is used.
+
+asm.js gives an interesting speed boost, so we hope that more browsers
 will support this Javascript subset.
 
 6) FFmpeg modifications

VERSION

@@ -1 +1 @@
-0.9.3
+0.9.4

bpgdec.c

@@ -174,11 +174,13 @@ static void bpg_show_info(const char *filename, int show_extensions)
     FILE *f;
     BPGImageInfo p_s, *p = &p_s;
     BPGExtensionData *first_md, *md;
-    static const char *format_str[4] = {
+    static const char *format_str[6] = {
         "Gray",
         "4:2:0",
         "4:2:2",
         "4:4:4",
+        "4:2:0_video",
+        "4:2:2_video",
     };
     static const char *color_space_str[BPG_CS_COUNT] = {
         "YCbCr",