FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/v410dec.c
Date: 2021-09-24 20:55:06
Exec Total Coverage
Lines: 42 49 85.7%
Branches: 7 12 58.3%

Line Branch Exec Source
1 /*
2 * v410 decoder
3 *
4 * Copyright (c) 2011 Derek Buitenhuis
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 "libavutil/common.h"
24 #include "libavutil/intreadwrite.h"
25 #include "avcodec.h"
26 #include "internal.h"
27 #include "thread.h"
28
29 typedef struct ThreadData {
30 AVFrame *frame;
31 uint8_t *buf;
32 int stride;
33 } ThreadData;
34
35 2 static av_cold int v410_decode_init(AVCodecContext *avctx)
36 {
37 2 avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
38 2 avctx->bits_per_raw_sample = 10;
39
40
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
2 if (avctx->width & 1) {
41 if (avctx->err_recognition & AV_EF_EXPLODE) {
42 av_log(avctx, AV_LOG_ERROR, "v410 requires width to be even.\n");
43 return AVERROR_INVALIDDATA;
44 } else {
45 av_log(avctx, AV_LOG_WARNING, "v410 requires width to be even, continuing anyway.\n");
46 }
47 }
48
49 2 return 0;
50 }
51
52 1 static int v410_decode_slice(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
53 {
54 1 ThreadData *td = arg;
55 1 AVFrame *pic = td->frame;
56 1 int stride = td->stride;
57 1 int thread_count = av_clip(avctx->thread_count, 1, avctx->height/4);
58 1 int slice_start = (avctx->height * jobnr) / thread_count;
59 1 int slice_end = (avctx->height * (jobnr+1)) / thread_count;
60 1 const uint8_t *src = td->buf + stride * slice_start;
61 uint16_t *y, *u, *v;
62 uint32_t val;
63 int i, j;
64
65 1 y = (uint16_t*)pic->data[0] + slice_start * (pic->linesize[0] >> 1);
66 1 u = (uint16_t*)pic->data[1] + slice_start * (pic->linesize[1] >> 1);
67 1 v = (uint16_t*)pic->data[2] + slice_start * (pic->linesize[2] >> 1);
68
69
2/2
✓ Branch 0 taken 256 times.
✓ Branch 1 taken 1 times.
257 for (i = slice_start; i < slice_end; i++) {
70
2/2
✓ Branch 0 taken 65536 times.
✓ Branch 1 taken 256 times.
65792 for (j = 0; j < avctx->width; j++) {
71 65536 val = AV_RL32(src);
72
73 65536 u[j] = (val >> 2) & 0x3FF;
74 65536 y[j] = (val >> 12) & 0x3FF;
75 65536 v[j] = (val >> 22);
76
77 65536 src += 4;
78 }
79
80 256 y += pic->linesize[0] >> 1;
81 256 u += pic->linesize[1] >> 1;
82 256 v += pic->linesize[2] >> 1;
83 }
84
85 1 return 0;
86 }
87
88 1 static int v410_decode_frame(AVCodecContext *avctx, void *data,
89 int *got_frame, AVPacket *avpkt)
90 {
91 ThreadData td;
92 1 ThreadFrame frame = { .f = data };
93 1 AVFrame *pic = data;
94 1 uint8_t *src = avpkt->data;
95 int ret;
96 1 int thread_count = av_clip(avctx->thread_count, 1, avctx->height/4);
97
98 1 td.stride = avctx->width * 4;
99
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
1 if (avpkt->size < 4 * avctx->height * avctx->width) {
100 av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
101 return AVERROR(EINVAL);
102 }
103
104
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
1 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
105 return ret;
106
107 1 pic->key_frame = 1;
108 1 pic->pict_type = AV_PICTURE_TYPE_I;
109
110 1 td.buf = src;
111 1 td.frame = pic;
112 1 avctx->execute2(avctx, v410_decode_slice, &td, NULL, thread_count);
113
114 1 *got_frame = 1;
115
116 1 return avpkt->size;
117 }
118
119 const AVCodec ff_v410_decoder = {
120 .name = "v410",
121 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
122 .type = AVMEDIA_TYPE_VIDEO,
123 .id = AV_CODEC_ID_V410,
124 .init = v410_decode_init,
125 .decode = v410_decode_frame,
126 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS |
127 AV_CODEC_CAP_FRAME_THREADS,
128 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
129 };
130