FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/targa_y216dec.c
Date: 2021-09-22 05:58:22
Exec Total Coverage
Lines: 0 30 0.0%
Branches: 0 8 0.0%

Line Branch Exec Source
1 /*
2 * Pinnacle TARGA CineWave YUV16 decoder
3 * Copyright (c) 2012 Carl Eugen Hoyos
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "avcodec.h"
23 #include "internal.h"
24
25 static av_cold int y216_decode_init(AVCodecContext *avctx)
26 {
27 avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
28 avctx->bits_per_raw_sample = 14;
29
30 return 0;
31 }
32
33 static int y216_decode_frame(AVCodecContext *avctx, void *data,
34 int *got_frame, AVPacket *avpkt)
35 {
36 AVFrame *pic = data;
37 const uint16_t *src = (uint16_t *)avpkt->data;
38 uint16_t *y, *u, *v;
39 int aligned_width = FFALIGN(avctx->width, 4);
40 int i, j, ret;
41
42 if (avpkt->size < 4 * avctx->height * aligned_width) {
43 av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
44 return AVERROR(EINVAL);
45 }
46
47 if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
48 return ret;
49
50 pic->key_frame = 1;
51 pic->pict_type = AV_PICTURE_TYPE_I;
52
53 y = (uint16_t *)pic->data[0];
54 u = (uint16_t *)pic->data[1];
55 v = (uint16_t *)pic->data[2];
56
57 for (i = 0; i < avctx->height; i++) {
58 for (j = 0; j < avctx->width >> 1; j++) {
59 u[ j ] = src[4 * j ] << 2 | src[4 * j ] >> 14;
60 y[2 * j ] = src[4 * j + 1] << 2 | src[4 * j + 1] >> 14;
61 v[ j ] = src[4 * j + 2] << 2 | src[4 * j + 2] >> 14;
62 y[2 * j + 1] = src[4 * j + 3] << 2 | src[4 * j + 3] >> 14;
63 }
64
65 y += pic->linesize[0] >> 1;
66 u += pic->linesize[1] >> 1;
67 v += pic->linesize[2] >> 1;
68 src += aligned_width << 1;
69 }
70
71 *got_frame = 1;
72
73 return avpkt->size;
74 }
75
76 const AVCodec ff_targa_y216_decoder = {
77 .name = "targa_y216",
78 .long_name = NULL_IF_CONFIG_SMALL("Pinnacle TARGA CineWave YUV16"),
79 .type = AVMEDIA_TYPE_VIDEO,
80 .id = AV_CODEC_ID_TARGA_Y216,
81 .init = y216_decode_init,
82 .decode = y216_decode_frame,
83 .capabilities = AV_CODEC_CAP_DR1,
84 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
85 };
86