/*

 * Copyright (c) 2014 James Almer

 *

 * 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 "libavcodec/flacdsp.h"

#include "libavutil/x86/cpu.h"

#include "config.h"

void ff_flac_lpc_16_sse4(int32_t *samples, const int coeffs[32], int order,

                         int qlevel, int len);

void ff_flac_lpc_32_sse4(int32_t *samples, const int coeffs[32], int order,

                         int qlevel, int len);

void ff_flac_lpc_32_xop(int32_t *samples, const int coeffs[32], int order,

                        int qlevel, int len);

void ff_flac_wasted_32_sse2(int32_t *decoded, int wasted, int len);

void ff_flac_wasted_33_sse4(int64_t *decoded, const int32_t *residual, int wasted, int len);

#define DECORRELATE_FUNCS(fmt, opt)                                                      \

void ff_flac_decorrelate_ls_##fmt##_##opt(uint8_t **out, int32_t **in, int channels,     \

                                          int len, int shift);                           \

void ff_flac_decorrelate_rs_##fmt##_##opt(uint8_t **out, int32_t **in, int channels,     \

                                          int len, int shift);                           \

void ff_flac_decorrelate_ms_##fmt##_##opt(uint8_t **out, int32_t **in, int channels,     \

                                          int len, int shift)

#define DECORRELATE_IFUNCS(fmt, opt)                                                     \

void ff_flac_decorrelate_indep2_##fmt##_##opt(uint8_t **out, int32_t **in, int channels, \

                                             int len, int shift);                        \

void ff_flac_decorrelate_indep4_##fmt##_##opt(uint8_t **out, int32_t **in, int channels, \

                                              int len, int shift);                       \

void ff_flac_decorrelate_indep6_##fmt##_##opt(uint8_t **out, int32_t **in, int channels, \

                                              int len, int shift);                       \

void ff_flac_decorrelate_indep8_##fmt##_##opt(uint8_t **out, int32_t **in, int channels, \

                                              int len, int shift)

DECORRELATE_FUNCS(16, sse2);

DECORRELATE_FUNCS(16,  avx);

DECORRELATE_FUNCS(32, sse2);

DECORRELATE_FUNCS(32,  avx);

DECORRELATE_IFUNCS(16, ssse3);

DECORRELATE_IFUNCS(16,  avx);

DECORRELATE_IFUNCS(32, ssse3);

DECORRELATE_IFUNCS(32,  avx);

av_cold void ff_flacdsp_init_x86(FLACDSPContext *c, enum AVSampleFormat fmt, int channels)

{

#if HAVE_X86ASM

    int cpu_flags = av_get_cpu_flags();

    if (EXTERNAL_SSE2(cpu_flags)) {

        c->wasted32 = ff_flac_wasted_32_sse2;

        if (fmt == AV_SAMPLE_FMT_S16) {

            c->decorrelate[1] = ff_flac_decorrelate_ls_16_sse2;

            c->decorrelate[2] = ff_flac_decorrelate_rs_16_sse2;

            c->decorrelate[3] = ff_flac_decorrelate_ms_16_sse2;

        } else if (fmt == AV_SAMPLE_FMT_S32) {

            c->decorrelate[1] = ff_flac_decorrelate_ls_32_sse2;

            c->decorrelate[2] = ff_flac_decorrelate_rs_32_sse2;

            c->decorrelate[3] = ff_flac_decorrelate_ms_32_sse2;

        }

    }

    if (EXTERNAL_SSSE3(cpu_flags)) {

        if (fmt == AV_SAMPLE_FMT_S16) {

            if (channels == 2)

                c->decorrelate[0] = ff_flac_decorrelate_indep2_16_ssse3;

            else if (channels == 4)

                c->decorrelate[0] = ff_flac_decorrelate_indep4_16_ssse3;

            else if (channels == 6)

                c->decorrelate[0] = ff_flac_decorrelate_indep6_16_ssse3;

            else if (ARCH_X86_64 && channels == 8)

                c->decorrelate[0] = ff_flac_decorrelate_indep8_16_ssse3;

        } else if (fmt == AV_SAMPLE_FMT_S32) {

            if (channels == 2)

                c->decorrelate[0] = ff_flac_decorrelate_indep2_32_ssse3;

            else if (channels == 4)

                c->decorrelate[0] = ff_flac_decorrelate_indep4_32_ssse3;

            else if (channels == 6)

                c->decorrelate[0] = ff_flac_decorrelate_indep6_32_ssse3;

            else if (ARCH_X86_64 && channels == 8)

                c->decorrelate[0] = ff_flac_decorrelate_indep8_32_ssse3;

        }

    }

    if (EXTERNAL_SSE4(cpu_flags)) {

        c->lpc16 = ff_flac_lpc_16_sse4;

        c->lpc32 = ff_flac_lpc_32_sse4;

        c->wasted33 = ff_flac_wasted_33_sse4;

    }

    if (EXTERNAL_AVX(cpu_flags)) {

        if (fmt == AV_SAMPLE_FMT_S16) {

            if (ARCH_X86_64 && channels == 8)

                c->decorrelate[0] = ff_flac_decorrelate_indep8_16_avx;

        } else if (fmt == AV_SAMPLE_FMT_S32) {

            if (channels == 4)

                c->decorrelate[0] = ff_flac_decorrelate_indep4_32_avx;

            else if (channels == 6)

                c->decorrelate[0] = ff_flac_decorrelate_indep6_32_avx;

            else if (ARCH_X86_64 && channels == 8)

                c->decorrelate[0] = ff_flac_decorrelate_indep8_32_avx;

        }

    }

    if (EXTERNAL_XOP(cpu_flags)) {

        c->lpc32 = ff_flac_lpc_32_xop;

    }

#endif /* HAVE_X86ASM */

}