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/* |
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* Copyright (c) 2012 Mans Rullgard <mans@mansr.com> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "libavutil/attributes.h" |
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#include "libavutil/samplefmt.h" |
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#include "flacdsp.h" |
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#include "config.h" |
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#define SAMPLE_SIZE 16 |
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#define PLANAR 0 |
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#include "flacdsp_template.c" |
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#include "flacdsp_lpc_template.c" |
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#undef PLANAR |
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#define PLANAR 1 |
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#include "flacdsp_template.c" |
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#undef SAMPLE_SIZE |
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#undef PLANAR |
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#define SAMPLE_SIZE 32 |
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#define PLANAR 0 |
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#include "flacdsp_template.c" |
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#include "flacdsp_lpc_template.c" |
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#undef PLANAR |
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#define PLANAR 1 |
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#include "flacdsp_template.c" |
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static void flac_lpc_16_c(int32_t *decoded, const int coeffs[32], |
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int pred_order, int qlevel, int len) |
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{ |
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int i, j; |
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✓✓ |
18997124 |
for (i = pred_order; i < len - 1; i += 2, decoded += 2) { |
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18990953 |
SUINT c = coeffs[0]; |
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18990953 |
SUINT d = decoded[0]; |
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18990953 |
int s0 = 0, s1 = 0; |
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✓✓ |
33122306 |
for (j = 1; j < pred_order; j++) { |
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14131353 |
s0 += c*d; |
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14131353 |
d = decoded[j]; |
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14131353 |
s1 += c*d; |
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14131353 |
c = coeffs[j]; |
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} |
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18990953 |
s0 += c*d; |
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d = decoded[j] += (SUINT)(s0 >> qlevel); |
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18990953 |
s1 += c*d; |
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decoded[j + 1] += (SUINT)(s1 >> qlevel); |
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} |
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✓✓ |
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if (i < len) { |
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int sum = 0; |
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✓✓ |
14984 |
for (j = 0; j < pred_order; j++) |
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sum += coeffs[j] * (SUINT)decoded[j]; |
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decoded[j] = decoded[j] + (unsigned)(sum >> qlevel); |
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} |
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} |
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static void flac_lpc_32_c(int32_t *decoded, const int coeffs[32], |
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int pred_order, int qlevel, int len) |
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{ |
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int i, j; |
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✓✓ |
12360568 |
for (i = pred_order; i < len; i++, decoded++) { |
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12358395 |
int64_t sum = 0; |
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✓✓ |
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for (j = 0; j < pred_order; j++) |
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sum += (int64_t)coeffs[j] * decoded[j]; |
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decoded[j] += sum >> qlevel; |
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} |
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} |
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av_cold void ff_flacdsp_init(FLACDSPContext *c, enum AVSampleFormat fmt, int channels, |
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int bps) |
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{ |
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c->lpc16 = flac_lpc_16_c; |
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c->lpc32 = flac_lpc_32_c; |
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c->lpc16_encode = flac_lpc_encode_c_16; |
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c->lpc32_encode = flac_lpc_encode_c_32; |
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✓✗✓✗
✗ |
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switch (fmt) { |
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case AV_SAMPLE_FMT_S32: |
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c->decorrelate[0] = flac_decorrelate_indep_c_32; |
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c->decorrelate[1] = flac_decorrelate_ls_c_32; |
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c->decorrelate[2] = flac_decorrelate_rs_c_32; |
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c->decorrelate[3] = flac_decorrelate_ms_c_32; |
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break; |
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case AV_SAMPLE_FMT_S32P: |
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c->decorrelate[0] = flac_decorrelate_indep_c_32p; |
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c->decorrelate[1] = flac_decorrelate_ls_c_32p; |
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c->decorrelate[2] = flac_decorrelate_rs_c_32p; |
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c->decorrelate[3] = flac_decorrelate_ms_c_32p; |
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break; |
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case AV_SAMPLE_FMT_S16: |
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c->decorrelate[0] = flac_decorrelate_indep_c_16; |
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c->decorrelate[1] = flac_decorrelate_ls_c_16; |
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c->decorrelate[2] = flac_decorrelate_rs_c_16; |
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c->decorrelate[3] = flac_decorrelate_ms_c_16; |
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break; |
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case AV_SAMPLE_FMT_S16P: |
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c->decorrelate[0] = flac_decorrelate_indep_c_16p; |
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c->decorrelate[1] = flac_decorrelate_ls_c_16p; |
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c->decorrelate[2] = flac_decorrelate_rs_c_16p; |
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c->decorrelate[3] = flac_decorrelate_ms_c_16p; |
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break; |
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} |
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if (ARCH_ARM) |
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ff_flacdsp_init_arm(c, fmt, channels, bps); |
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if (ARCH_X86) |
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ff_flacdsp_init_x86(c, fmt, channels, bps); |
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} |