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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 <stdint.h> |
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#include "libavutil/attributes.h" |
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#include "libavutil/common.h" |
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#include "audiodsp.h" |
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2374400 |
static inline uint32_t clipf_c_one(uint32_t a, uint32_t mini, |
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uint32_t maxi, uint32_t maxisign) |
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{ |
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✗✓ |
2374400 |
if (a > mini) |
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return mini; |
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✗✓ |
2374400 |
else if ((a ^ (1U << 31)) > maxisign) |
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return maxi; |
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else |
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return a; |
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} |
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static void vector_clipf_c_opposite_sign(float *dst, const float *src, |
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float *min, float *max, int len) |
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{ |
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int i; |
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uint32_t mini = *(uint32_t *) min; |
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uint32_t maxi = *(uint32_t *) max; |
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uint32_t maxisign = maxi ^ (1U << 31); |
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uint32_t *dsti = (uint32_t *) dst; |
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const uint32_t *srci = (const uint32_t *) src; |
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✓✓ |
301098 |
for (i = 0; i < len; i += 8) { |
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dsti[i + 0] = clipf_c_one(srci[i + 0], mini, maxi, maxisign); |
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dsti[i + 1] = clipf_c_one(srci[i + 1], mini, maxi, maxisign); |
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dsti[i + 2] = clipf_c_one(srci[i + 2], mini, maxi, maxisign); |
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dsti[i + 3] = clipf_c_one(srci[i + 3], mini, maxi, maxisign); |
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dsti[i + 4] = clipf_c_one(srci[i + 4], mini, maxi, maxisign); |
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dsti[i + 5] = clipf_c_one(srci[i + 5], mini, maxi, maxisign); |
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dsti[i + 6] = clipf_c_one(srci[i + 6], mini, maxi, maxisign); |
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dsti[i + 7] = clipf_c_one(srci[i + 7], mini, maxi, maxisign); |
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} |
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} |
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static void vector_clipf_c(float *dst, const float *src, int len, |
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float min, float max) |
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{ |
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int i; |
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✓✓✓✓
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if (min < 0 && max > 0) { |
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vector_clipf_c_opposite_sign(dst, src, &min, &max, len); |
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} else { |
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✓✓ |
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for (i = 0; i < len; i += 8) { |
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dst[i] = av_clipf(src[i], min, max); |
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dst[i + 1] = av_clipf(src[i + 1], min, max); |
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dst[i + 2] = av_clipf(src[i + 2], min, max); |
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dst[i + 3] = av_clipf(src[i + 3], min, max); |
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dst[i + 4] = av_clipf(src[i + 4], min, max); |
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dst[i + 5] = av_clipf(src[i + 5], min, max); |
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dst[i + 6] = av_clipf(src[i + 6], min, max); |
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dst[i + 7] = av_clipf(src[i + 7], min, max); |
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} |
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} |
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} |
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static int32_t scalarproduct_int16_c(const int16_t *v1, const int16_t *v2, |
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int order) |
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{ |
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unsigned res = 0; |
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✓✓ |
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while (order--) |
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res += *v1++ **v2++; |
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return res; |
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} |
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static void vector_clip_int32_c(int32_t *dst, const int32_t *src, int32_t min, |
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int32_t max, unsigned int len) |
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{ |
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do { |
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*dst++ = av_clip(*src++, min, max); |
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*dst++ = av_clip(*src++, min, max); |
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*dst++ = av_clip(*src++, min, max); |
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*dst++ = av_clip(*src++, min, max); |
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*dst++ = av_clip(*src++, min, max); |
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*dst++ = av_clip(*src++, min, max); |
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*dst++ = av_clip(*src++, min, max); |
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*dst++ = av_clip(*src++, min, max); |
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len -= 8; |
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✓✓ |
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} while (len > 0); |
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} |
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av_cold void ff_audiodsp_init(AudioDSPContext *c) |
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{ |
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c->scalarproduct_int16 = scalarproduct_int16_c; |
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c->vector_clip_int32 = vector_clip_int32_c; |
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c->vector_clipf = vector_clipf_c; |
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if (ARCH_ARM) |
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ff_audiodsp_init_arm(c); |
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if (ARCH_PPC) |
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ff_audiodsp_init_ppc(c); |
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if (ARCH_X86) |
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ff_audiodsp_init_x86(c); |
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} |