FFmpeg coverage


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
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