GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/targa_y216dec.c Lines: 0 30 0.0 %
Date: 2020-10-23 17:01:47 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
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
};