MPEG1/2 decoding update (buffered frames are decoded now)

Originally committed as revision 2617 to svn://svn.ffmpeg.org/ffmpeg/trunk

tests/ffmpeg.regression.ref

 ffmpeg regression test
 74e25b401f34321aeb854e264ef62df8 *./data/a-mpeg1.mpg
-6713259d72260740bbddaea30631ea18 *./data/out.yuv
-stddev:  7.58 bytes:7299072
+1ee8816bd078efe66be0090b1d9b0af1 *./data/out.yuv
+stddev:  7.63 bytes:7602176
 b588110bebb48b5a1815ac26d0f0c9cc *./data/a-mpeg2.mpg
-0f3dbc8ee895c7853e06b8dec279c666 *./data/out.yuv
-stddev:  7.62 bytes:7299072
+ddfa5c618dab54df0f47976ddd55d90f *./data/out.yuv
+stddev:  7.65 bytes:7602176
 345b79f7afe43abc0128a7b1d5fff949 *./data/a-mpeg2i.mpg
-80d2f03a4ace66c734e8d33ffd27e88d *./data/out.yuv
-stddev:  7.93 bytes:7299072
+5df468301367ed2dde5f064bf4c17301 *./data/out.yuv
+stddev:  7.96 bytes:7602176
 d0dc46dd831398237a690ebbeff18b64 *./data/a-msmpeg4v2.avi
 712aa6c959d1d90a78fe98657cbff19c *./data/out.yuv
 stddev:  8.11 bytes:7602176
@@ -42,8 +42,8 @@ stddev:  7.31 bytes:7602176
 bd441fc1e2fb9a3c0bdc9c5f1ed25ef0 *./data/out.yuv
 stddev: 13.57 bytes:7602176
 328ebd044362116e274739e23c482ee7 *./data/a-mpeg1b.mpg
-41b3baa7d8c17202e6577947ac37cad0 *./data/out.yuv
-stddev:  6.32 bytes:6842368
+788a9d500dc8986231a18076fc80fd73 *./data/out.yuv
+stddev: 10.07 bytes:7145472
 07042f42b3119c39eb26537a84a451df *./data/a-mjpeg.avi
 f23a9e50a559e174766ee808c48fea22 *./data/out.yuv
 stddev:  8.87 bytes:7602176

tests/rotozoom.regression.ref

 ffmpeg regression test
 a6ccb5e768c7bed7a08f8e4343d81871 *./data/a-mpeg1.mpg
-0cf790edd0f4c5cf993c2d59211b9de2 *./data/out.yuv
-stddev:  4.91 bytes:7299072
+9364e15902bc56603dfb453f8bf146e0 *./data/out.yuv
+stddev:  4.93 bytes:7602176
 aa0f088777131d8ffb627e6ff37312ca *./data/a-mpeg2.mpg
-e32c521f104a6e11b26a6165bcad33f7 *./data/out.yuv
-stddev:  4.93 bytes:7299072
+830e7d798089ea6213e0867fd7676fde *./data/out.yuv
+stddev:  4.95 bytes:7602176
 ed480119089c61ba5a5a8668675c7d49 *./data/a-mpeg2i.mpg
-d3d02a8353dcc669c45529c96f92bee9 *./data/out.yuv
-stddev:  4.94 bytes:7299072
+a6ec3343ce12d72ccc7d0d8303b84781 *./data/out.yuv
+stddev:  4.96 bytes:7602176
 14db391f167b52b21a983157b410affc *./data/a-msmpeg4v2.avi
 fc8881e0904af9491d5fa0163183954b *./data/out.yuv
 stddev:  5.29 bytes:7602176
@@ -42,8 +42,8 @@ f2888ab759ac28aba85a16d3d54b80d0 *./data/a-error-mpeg4-adv.avi
 93ab926aad2e658a5bb00c25b7cefdab *./data/out.yuv
 stddev:  5.22 bytes:7602176
 671802a2c5078e69f7f422765ea87f2a *./data/a-mpeg1b.mpg
-71e80b8ff8da567f1bbff000cd925627 *./data/out.yuv
-stddev:  4.07 bytes:6842368
+d3d5876cef34b728602d5a22eee9249f *./data/out.yuv
+stddev:  5.93 bytes:7145472
 e9218a1db885fe0262e88f9df630307d *./data/a-mjpeg.avi
 a365b4da246ad68caf96b702b7f961a1 *./data/out.yuv
 stddev:  4.76 bytes:7602176