diff options
Diffstat (limited to 'libavcodec/ffv1_template.c')
| -rw-r--r-- | libavcodec/ffv1_template.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/libavcodec/ffv1_template.c b/libavcodec/ffv1_template.c new file mode 100644 index 0000000000..f2ab93313a --- /dev/null +++ b/libavcodec/ffv1_template.c @@ -0,0 +1,53 @@ +/* + * FFV1 codec + * + * Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +static inline int RENAME(predict)(TYPE *src, TYPE *last) +{ + const int LT = last[-1]; + const int T = last[0]; + const int L = src[-1]; + + return mid_pred(L, L + T - LT, T); +} + +static inline int RENAME(get_context)(PlaneContext *p, TYPE *src, + TYPE *last, TYPE *last2) +{ + const int LT = last[-1]; + const int T = last[0]; + const int RT = last[1]; + const int L = src[-1]; + + if (p->quant_table[3][127]) { + const int TT = last2[0]; + const int LL = src[-2]; + return p->quant_table[0][(L - LT) & 0xFF] + + p->quant_table[1][(LT - T) & 0xFF] + + p->quant_table[2][(T - RT) & 0xFF] + + p->quant_table[3][(LL - L) & 0xFF] + + p->quant_table[4][(TT - T) & 0xFF]; + } else + return p->quant_table[0][(L - LT) & 0xFF] + + p->quant_table[1][(LT - T) & 0xFF] + + p->quant_table[2][(T - RT) & 0xFF]; +} + |