Snow multiple reference frames

(bitstream is not backwards compatible, even if refs aren't used)

Originally committed as revision 5417 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/snow.h

@@ -30,6 +30,7 @@
 #define QROOT (1<<QSHIFT)
 #define LOSSLESS_QLOG -128
 #define FRAC_BITS 8
+#define MAX_REF_FRAMES 8
 
 #define LOG2_OBMC_MAX 8
 #define OBMC_MAX (1<<(LOG2_OBMC_MAX))

tests/ffmpeg.regression.ref

@@ -133,12 +133,12 @@ a7ef4746f27be309138c188e327d3ebe *./data/a-ffv1.avi
 2653642 ./data/a-ffv1.avi
 799d3db687f6cdd7a837ec156efc171f *./data/out.yuv
 stddev:  0.00 PSNR:99.99 bytes:7602176
-dfe6fae9971a40378ae1c1c66d15ec52 *./data/a-snow.avi
-155226 ./data/a-snow.avi
-bc8dc6fe1bae64430b16ec1e1e139509 *./data/out.yuv
-stddev: 23.18 PSNR:20.82 bytes:7602176
-11fd61ee7e67ef7a7b2a3df973691305 *./data/a-snow53.avi
-3533710 ./data/a-snow53.avi
+ee3a27ccd48345f071e1617b116c76b6 *./data/a-snow.avi
+154958 ./data/a-snow.avi
+5310705af239bc5a427a2fa2ffb9206d *./data/out.yuv
+stddev: 23.18 PSNR:20.81 bytes:7602176
+ef6b08e8e122c5d29aa7af9259098d3e *./data/a-snow53.avi
+3533712 ./data/a-snow53.avi
 799d3db687f6cdd7a837ec156efc171f *./data/out.yuv
 stddev:  0.00 PSNR:99.99 bytes:7602176
 85529d9838c5a8aef041445fa8ef3c85 *./data/a-dv.dv

tests/rotozoom.regression.ref

@@ -133,11 +133,11 @@ d0831a8339491fd680b650f05262e5d9 *./data/a-ffv1.avi
 3524768 ./data/a-ffv1.avi
 dde5895817ad9d219f79a52d0bdfb001 *./data/out.yuv
 stddev:  0.00 PSNR:99.99 bytes:7602176
-d65c40a7d53f828a6c16eaef637d466f *./data/a-snow.avi
-68060 ./data/a-snow.avi
-a7d48185f56d612b2f19b9e52640d102 *./data/out.yuv
-stddev: 10.93 PSNR:27.34 bytes:7602176
-3f20642bb789dfb75ae3e8c03f9b425c *./data/a-snow53.avi
+64812de848ca5eec1931bce8299ed6a1 *./data/a-snow.avi
+68024 ./data/a-snow.avi
+146f2c37d861f542bfb635e05be160e9 *./data/out.yuv
+stddev: 10.94 PSNR:27.34 bytes:7602176
+1b4d88af4c8c1ac3fd092de0a69d5023 *./data/a-snow53.avi
 2725570 ./data/a-snow53.avi
 dde5895817ad9d219f79a52d0bdfb001 *./data/out.yuv
 stddev:  0.00 PSNR:99.99 bytes:7602176