diff options
Diffstat (limited to 'libavcodec/bfin/vp3dsp_init.c')
-rw-r--r-- | libavcodec/bfin/vp3dsp_init.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/libavcodec/bfin/vp3dsp_init.c b/libavcodec/bfin/vp3dsp_init.c new file mode 100644 index 0000000..ae7ce93 --- /dev/null +++ b/libavcodec/bfin/vp3dsp_init.c @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com> + * + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdint.h> +#include <string.h> + +#include "libavutil/attributes.h" +#include "libavcodec/avcodec.h" +#include "libavcodec/vp3dsp.h" +#include "libavcodec/dsputil.h" + +void ff_bfin_vp3_idct(int16_t *block); + +/* Intra iDCT offset 128 */ +static void bfin_vp3_idct_put(uint8_t *dest, int line_size, int16_t *block) +{ + const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP + 128; + int i,j; + + ff_bfin_vp3_idct (block); + + for (i=0;i<8;i++) + for (j=0;j<8;j++) + dest[line_size*i + j] = cm[block[j*8 + i]]; + + memset(block, 0, 128); +} + +/* Inter iDCT */ +static void bfin_vp3_idct_add(uint8_t *dest, int line_size, int16_t *block) +{ + const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP; + int i, j; + + ff_bfin_vp3_idct (block); + for (i = 0; i < 8; i++) + for (j = 0; j < 8; j++) + dest[line_size*i + j] = cm[dest[line_size*i + j] + block[j*8 + i]]; + + memset(block, 0, 128); +} + +av_cold void ff_vp3dsp_init_bfin(VP3DSPContext *c, int flags) +{ + if (!(flags & CODEC_FLAG_BITEXACT)) { + c->idct_add = bfin_vp3_idct_add; + c->idct_put = bfin_vp3_idct_put; + } +} |