diff options
Diffstat (limited to 'libavcodec/x86/alacdsp_init.c')
-rw-r--r-- | libavcodec/x86/alacdsp_init.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/libavcodec/x86/alacdsp_init.c b/libavcodec/x86/alacdsp_init.c new file mode 100644 index 0000000..18f7308 --- /dev/null +++ b/libavcodec/x86/alacdsp_init.c @@ -0,0 +1,44 @@ +/* + * 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 "libavutil/attributes.h" +#include "libavutil/x86/cpu.h" +#include "libavcodec/alacdsp.h" +#include "config.h" + +void ff_alac_decorrelate_stereo_sse4(int32_t *buffer[2], int nb_samples, + int decorr_shift, int decorr_left_weight); +void ff_alac_append_extra_bits_stereo_sse2(int32_t *buffer[2], int32_t *extra_bits_buffer[2], + int extra_bits, int channels, int nb_samples); +void ff_alac_append_extra_bits_mono_sse2(int32_t *buffer[2], int32_t *extra_bits_buffer[2], + int extra_bits, int channels, int nb_samples); + +av_cold void ff_alacdsp_init_x86(ALACDSPContext *c) +{ +#if HAVE_X86ASM + int cpu_flags = av_get_cpu_flags(); + + if (EXTERNAL_SSE2(cpu_flags)) { + c->append_extra_bits[0] = ff_alac_append_extra_bits_mono_sse2; + c->append_extra_bits[1] = ff_alac_append_extra_bits_stereo_sse2; + } + if (EXTERNAL_SSE4(cpu_flags)) { + c->decorrelate_stereo = ff_alac_decorrelate_stereo_sse4; + } +#endif /* HAVE_X86ASM */ +} |