Directory: | ../../../ffmpeg/ |
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File: | src/libavcodec/ttadsp.c |
Date: | 2022-07-07 01:21:54 |
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Lines: | 26 | 26 | 100.0% |
Branches: | 4 | 4 | 100.0% |
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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] = -(unsigned)dl[5]; dl[5] = -(unsigned)dl[6]; | |
51 | 2683394 | dl[6] = *in -(unsigned)dl[7]; dl[7] = *in; | |
52 | 2683394 | dl[5] += (unsigned)dl[6]; dl[4] += (unsigned)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 | #endif | ||
62 | 20 | } | |
63 |