| Directory: | ../../../ffmpeg/ |
|---|---|
| File: | src/libavcodec/ttadsp.c |
| Date: | 2021-09-16 08:47:15 |
| Exec | Total | Coverage | |
|---|---|---|---|
| Lines: | 26 | 26 | 100.0% |
| Branches: | 4 | 4 | 100.0% |
| Line | Branch | Exec | Source |
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| 1 | /* | ||
| 2 | * This file is part of FFmpeg. | ||
| 3 | * | ||
| 4 | * FFmpeg is free software; you can redistribute it and/or | ||
| 5 | * modify it under the terms of the GNU Lesser General Public | ||
| 6 | * License as published by the Free Software Foundation; either | ||
| 7 | * version 2.1 of the License, or (at your option) any later version. | ||
| 8 | * | ||
| 9 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 12 | * Lesser General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU Lesser General Public | ||
| 15 | * License along with FFmpeg; if not, write to the Free Software | ||
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 17 | */ | ||
| 18 | |||
| 19 | #include "libavutil/attributes.h" | ||
| 20 | #include "ttadsp.h" | ||
| 21 | #include "config.h" | ||
| 22 | |||
| 23 | 2683394 | static void tta_filter_process_c(int32_t *qmi, int32_t *dx, int32_t *dl, | |
| 24 | int32_t *error, int32_t *in, int32_t shift, | ||
| 25 | int32_t round) { | ||
| 26 | 2683394 | uint32_t *qm = qmi; | |
| 27 | |||
| 28 |
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2683394 | if (*error < 0) { |
| 29 | 1192779 | qm[0] -= dx[0]; qm[1] -= dx[1]; qm[2] -= dx[2]; qm[3] -= dx[3]; | |
| 30 | 1192779 | qm[4] -= dx[4]; qm[5] -= dx[5]; qm[6] -= dx[6]; qm[7] -= dx[7]; | |
| 31 |
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1490615 | } else if (*error > 0) { |
| 32 | 1209437 | qm[0] += dx[0]; qm[1] += dx[1]; qm[2] += dx[2]; qm[3] += dx[3]; | |
| 33 | 1209437 | qm[4] += dx[4]; qm[5] += dx[5]; qm[6] += dx[6]; qm[7] += dx[7]; | |
| 34 | } | ||
| 35 | |||
| 36 | 2683394 | round += dl[0] * qm[0] + dl[1] * qm[1] + dl[2] * qm[2] + dl[3] * qm[3] + | |
| 37 | 2683394 | dl[4] * qm[4] + dl[5] * qm[5] + dl[6] * qm[6] + dl[7] * qm[7]; | |
| 38 | |||
| 39 | 2683394 | dx[0] = dx[1]; dx[1] = dx[2]; dx[2] = dx[3]; dx[3] = dx[4]; | |
| 40 | 2683394 | dl[0] = dl[1]; dl[1] = dl[2]; dl[2] = dl[3]; dl[3] = dl[4]; | |
| 41 | |||
| 42 | 2683394 | dx[4] = ((dl[4] >> 30) | 1); | |
| 43 | 2683394 | dx[5] = ((dl[5] >> 30) | 2) & ~1; | |
| 44 | 2683394 | dx[6] = ((dl[6] >> 30) | 2) & ~1; | |
| 45 | 2683394 | dx[7] = ((dl[7] >> 30) | 4) & ~3; | |
| 46 | |||
| 47 | 2683394 | *error = *in; | |
| 48 | 2683394 | *in += (round >> shift); | |
| 49 | |||
| 50 | 2683394 | dl[4] = -dl[5]; dl[5] = -dl[6]; | |
| 51 | 2683394 | dl[6] = *in - dl[7]; dl[7] = *in; | |
| 52 | 2683394 | dl[5] += dl[6]; dl[4] += dl[5]; | |
| 53 | 2683394 | } | |
| 54 | |||
| 55 | 20 | av_cold void ff_ttadsp_init(TTADSPContext *c) | |
| 56 | { | ||
| 57 | 20 | c->filter_process = tta_filter_process_c; | |
| 58 | |||
| 59 | if (ARCH_X86) | ||
| 60 | 20 | ff_ttadsp_init_x86(c); | |
| 61 | 20 | } | |
| 62 |