diff options
Diffstat (limited to 'media/libstagefright/codecs/amrwbenc/src/random.c')
-rw-r--r-- | media/libstagefright/codecs/amrwbenc/src/random.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/src/random.c b/media/libstagefright/codecs/amrwbenc/src/random.c new file mode 100644 index 0000000..b896863 --- /dev/null +++ b/media/libstagefright/codecs/amrwbenc/src/random.c @@ -0,0 +1,33 @@ +/* + ** Copyright 2003-2010, VisualOn, Inc. + ** + ** Licensed under the Apache License, Version 2.0 (the "License"); + ** you may not use this file except in compliance with the License. + ** You may obtain a copy of the License at + ** + ** http://www.apache.org/licenses/LICENSE-2.0 + ** + ** Unless required by applicable law or agreed to in writing, software + ** distributed under the License is distributed on an "AS IS" BASIS, + ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + ** See the License for the specific language governing permissions and + ** limitations under the License. + */ + +/*********************************************************************** +* File: random.c * +* * +* Description: Signed 16 bits random generator * +* * +************************************************************************/ + +#include "typedef.h" +#include "basic_op.h" + +Word16 Random(Word16 * seed) +{ + /* static Word16 seed = 21845; */ + *seed = (Word16)(L_add((L_mult(*seed, 31821) >> 1), 13849L)); + return (*seed); +} + |