From c4f5c2d6f4ffa3f4b56555059000208a6ba47b55 Mon Sep 17 00:00:00 2001 From: Mans Rullgard Date: Mon, 16 May 2011 16:52:01 +0100 Subject: Move some mpegaudio functions to new mpegaudiodsp subsystem This separation allows these functions to be used in a cleaner fashion from other codecs (e.g. qdm2) and simplifies creating optimised versions of them. Signed-off-by: Mans Rullgard --- libavcodec/mpegaudiodsp.h | 63 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 libavcodec/mpegaudiodsp.h (limited to 'libavcodec/mpegaudiodsp.h') diff --git a/libavcodec/mpegaudiodsp.h b/libavcodec/mpegaudiodsp.h new file mode 100644 index 0000000000..7b05b68eee --- /dev/null +++ b/libavcodec/mpegaudiodsp.h @@ -0,0 +1,63 @@ +/* + * 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 + */ + +#ifndef AVCODEC_MPEGAUDIODSP_H +#define AVCODEC_MPEGAUDIODSP_H + +#include + +typedef struct MPADSPContext { + void (*apply_window_float)(float *synth_buf, float *window, + int *dither_state, float *samples, int incr); + void (*apply_window_fixed)(int32_t *synth_buf, int32_t *window, + int *dither_state, int16_t *samples, int incr); + void (*dct32_float)(float *dst, const float *src); + void (*dct32_fixed)(int *dst, const int *src); +} MPADSPContext; + +void ff_mpadsp_init(MPADSPContext *s); + +extern int32_t ff_mpa_synth_window_fixed[]; +extern float ff_mpa_synth_window_float[]; + +void ff_mpa_synth_filter_fixed(MPADSPContext *s, + int32_t *synth_buf_ptr, int *synth_buf_offset, + int32_t *window, int *dither_state, + int16_t *samples, int incr, + int *sb_samples); + +void ff_mpa_synth_filter_float(MPADSPContext *s, + float *synth_buf_ptr, int *synth_buf_offset, + float *window, int *dither_state, + float *samples, int incr, + float *sb_samples); + +void ff_mpadsp_init_mmx(MPADSPContext *s); +void ff_mpadsp_init_altivec(MPADSPContext *s); + +void ff_mpa_synth_init_float(float *window); +void ff_mpa_synth_init_fixed(int32_t *window); + +void ff_mpadsp_apply_window_float(float *synth_buf, float *window, + int *dither_state, float *samples, + int incr); +void ff_mpadsp_apply_window_fixed(int32_t *synth_buf, int32_t *window, + int *dither_state, int16_t *samples, + int incr); + +#endif -- cgit v1.2.3