diff options
Diffstat (limited to 'libavcodec/lossless_audiodsp.c')
-rw-r--r-- | libavcodec/lossless_audiodsp.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/libavcodec/lossless_audiodsp.c b/libavcodec/lossless_audiodsp.c new file mode 100644 index 0000000000..32f4c9e856 --- /dev/null +++ b/libavcodec/lossless_audiodsp.c @@ -0,0 +1,49 @@ +/* + * Monkey's Audio lossless audio decoder + * Copyright (c) 2007 Benjamin Zores <ben@geexbox.org> + * based upon libdemac from Dave Chapman. + * + * 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 + */ + +#include "avcodec.h" +#include "lossless_audiodsp.h" + +static int32_t scalarproduct_and_madd_int16_c(int16_t *v1, const int16_t *v2, + const int16_t *v3, + int order, int mul) +{ + int res = 0; + + while (order--) { + res += *v1 * *v2++; + *v1++ += mul * *v3++; + } + return res; +} + +av_cold void ff_llauddsp_init(LLAudDSPContext *c) +{ + c->scalarproduct_and_madd_int16 = scalarproduct_and_madd_int16_c; + + if (ARCH_ARM) + ff_llauddsp_init_arm(c); + if (ARCH_PPC) + ff_llauddsp_init_ppc(c); + if (ARCH_X86) + ff_llauddsp_init_x86(c); +} |