FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/proresdsp.c
Date: 2021-09-22 05:58:22
Exec Total Coverage
Lines: 33 34 97.1%
Branches: 9 10 90.0%

Line Branch Exec Source
1 /*
2 * Apple ProRes compatible decoder
3 *
4 * Copyright (c) 2010-2011 Maxim Poliakovski
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #include "config.h"
24 #include "libavutil/attributes.h"
25 #include "libavutil/common.h"
26 #include "idctdsp.h"
27 #include "proresdsp.h"
28 #include "simple_idct.h"
29
30 #define CLIP_MIN (1 << 2) ///< minimum value for clipping resulting pixels
31 #define CLIP_MAX_10 (1 << 10) - CLIP_MIN - 1 ///< maximum value for clipping resulting pixels
32 #define CLIP_MAX_12 (1 << 12) - CLIP_MIN - 1 ///< maximum value for clipping resulting pixels
33
34 #define CLIP_10(x) (av_clip((x), CLIP_MIN, CLIP_MAX_10))
35 #define CLIP_12(x) (av_clip((x), CLIP_MIN, CLIP_MAX_12))
36
37 /**
38 * Add bias value, clamp and output pixels of a slice
39 */
40
41 5069076 static inline void put_pixel(uint16_t *dst, ptrdiff_t linesize, const int16_t *in, int bits_per_raw_sample) {
42 int x, y, src_offset, dst_offset;
43
44
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45621684 for (y = 0, dst_offset = 0; y < 8; y++, dst_offset += linesize) {
45
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364973472 for (x = 0; x < 8; x++) {
46 324420864 src_offset = (y << 3) + x;
47
48
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324420864 if (bits_per_raw_sample == 10) {
49 167866368 dst[dst_offset + x] = CLIP_10(in[src_offset]);
50 } else {//12b
51 156554496 dst[dst_offset + x] = CLIP_12(in[src_offset]);
52 }
53 }
54 }
55 5069076 }
56
57 2622912 static void put_pixels_10(uint16_t *dst, ptrdiff_t linesize, const int16_t *in)
58 {
59 2622912 put_pixel(dst, linesize, in, 10);
60 2622912 }
61
62 2446164 static void put_pixels_12(uint16_t *dst, ptrdiff_t linesize, const int16_t *in)
63 {
64 2446164 put_pixel(dst, linesize, in, 12);
65 2446164 }
66
67 2622912 static void prores_idct_put_10_c(uint16_t *out, ptrdiff_t linesize, int16_t *block, const int16_t *qmat)
68 {
69 2622912 ff_prores_idct_10(block, qmat);
70 2622912 put_pixels_10(out, linesize >> 1, block);
71 2622912 }
72
73 2446164 static void prores_idct_put_12_c(uint16_t *out, ptrdiff_t linesize, int16_t *block, const int16_t *qmat)
74 {
75 2446164 ff_prores_idct_12(block, qmat);
76 2446164 put_pixels_12(out, linesize >> 1, block);
77 2446164 }
78
79 69 av_cold int ff_proresdsp_init(ProresDSPContext *dsp, AVCodecContext *avctx)
80 {
81
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69 if (avctx->bits_per_raw_sample == 10) {
82 45 dsp->idct_put = prores_idct_put_10_c;
83 45 dsp->idct_permutation_type = FF_IDCT_PERM_NONE;
84
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24 } else if (avctx->bits_per_raw_sample == 12) {
85 24 dsp->idct_put = prores_idct_put_12_c;
86 24 dsp->idct_permutation_type = FF_IDCT_PERM_NONE;
87 } else {
88 return AVERROR_BUG;
89 }
90
91 if (ARCH_X86)
92 69 ff_proresdsp_init_x86(dsp, avctx);
93
94 69 ff_init_scantable_permutation(dsp->idct_permutation,
95 69 dsp->idct_permutation_type);
96 69 return 0;
97 }
98