FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/v210x.c
Date: 2024-12-12 01:08:13
Exec Total Coverage
Lines: 0 62 0.0%
Functions: 0 2 0.0%
Branches: 0 20 0.0%

Line Branch Exec Source
1 /*
2 * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "avcodec.h"
22 #include "codec_internal.h"
23 #include "decode.h"
24 #include "libavutil/bswap.h"
25 #include "libavutil/internal.h"
26
27 static av_cold int decode_init(AVCodecContext *avctx)
28 {
29 if (avctx->width & 1) {
30 av_log(avctx, AV_LOG_ERROR, "v210x needs even width\n");
31 return AVERROR(EINVAL);
32 }
33 avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
34 avctx->bits_per_raw_sample = 10;
35
36 return 0;
37 }
38
39 static int decode_frame(AVCodecContext *avctx, AVFrame *pic,
40 int *got_frame, AVPacket *avpkt)
41 {
42 const uint32_t *src = (const uint32_t *)avpkt->data;
43 int width = avctx->width;
44 int y = 0;
45 uint16_t *ydst, *udst, *vdst, *yend;
46 int ret;
47
48 if (avpkt->size < avctx->width * avctx->height * 8 / 3) {
49 av_log(avctx, AV_LOG_ERROR, "Packet too small\n");
50 return AVERROR_INVALIDDATA;
51 }
52
53 if (avpkt->size > avctx->width * avctx->height * 8 / 3) {
54 avpriv_request_sample(avctx, "(Probably) padded data");
55 }
56
57 if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
58 return ret;
59
60 ydst = (uint16_t *)pic->data[0];
61 udst = (uint16_t *)pic->data[1];
62 vdst = (uint16_t *)pic->data[2];
63 yend = ydst + width;
64
65 for (;;) {
66 uint32_t v = av_be2ne32(*src++);
67 *udst++ = (v >> 16) & 0xFFC0;
68 *ydst++ = (v >> 6 ) & 0xFFC0;
69 *vdst++ = (v << 4 ) & 0xFFC0;
70
71 v = av_be2ne32(*src++);
72 *ydst++ = (v >> 16) & 0xFFC0;
73
74 if (ydst >= yend) {
75 ydst += pic->linesize[0] / 2 - width;
76 udst += pic->linesize[1] / 2 - width / 2;
77 vdst += pic->linesize[2] / 2 - width / 2;
78 yend = ydst + width;
79 if (++y >= avctx->height)
80 break;
81 }
82
83 *udst++ = (v >> 6 ) & 0xFFC0;
84 *ydst++ = (v << 4 ) & 0xFFC0;
85
86 v = av_be2ne32(*src++);
87 *vdst++ = (v >> 16) & 0xFFC0;
88 *ydst++ = (v >> 6 ) & 0xFFC0;
89
90 if (ydst >= yend) {
91 ydst += pic->linesize[0] / 2 - width;
92 udst += pic->linesize[1] / 2 - width / 2;
93 vdst += pic->linesize[2] / 2 - width / 2;
94 yend = ydst + width;
95 if (++y >= avctx->height)
96 break;
97 }
98
99 *udst++ = (v << 4 ) & 0xFFC0;
100
101 v = av_be2ne32(*src++);
102 *ydst++ = (v >> 16) & 0xFFC0;
103 *vdst++ = (v >> 6 ) & 0xFFC0;
104 *ydst++ = (v << 4 ) & 0xFFC0;
105 if (ydst >= yend) {
106 ydst += pic->linesize[0] / 2 - width;
107 udst += pic->linesize[1] / 2 - width / 2;
108 vdst += pic->linesize[2] / 2 - width / 2;
109 yend = ydst + width;
110 if (++y >= avctx->height)
111 break;
112 }
113 }
114
115 *got_frame = 1;
116
117 return avpkt->size;
118 }
119
120 const FFCodec ff_v210x_decoder = {
121 .p.name = "v210x",
122 CODEC_LONG_NAME("Uncompressed 4:2:2 10-bit"),
123 .p.type = AVMEDIA_TYPE_VIDEO,
124 .p.id = AV_CODEC_ID_V210X,
125 .init = decode_init,
126 FF_CODEC_DECODE_CB(decode_frame),
127 .p.capabilities = AV_CODEC_CAP_DR1,
128 };
129