FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/fitsenc.c	Lines:	46	50	92.0 %
Date:	2021-01-21 21:11:50	Branches:	18	20	90.0 %


/*
 * FITS image encoder
 * Copyright (c) 2017 Paras Chadha
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * FITS image encoder
 *
 * Specification: https://fits.gsfc.nasa.gov/fits_standard.html Version 3.0
 *
 * RGBA images are encoded as planes in RGBA order. So, NAXIS3 is 3 or 4 for them.
 * Also CTYPE3 = 'RGB ' is added to the header to distinguish them from 3d images.
 */

#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"

static int fits_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                            const AVFrame *pict, int *got_packet)
{
    AVFrame * const p = (AVFrame *)pict;
    uint8_t *bytestream, *bytestream_start, *ptr;
    const uint16_t flip = (1 << 15);
    uint64_t data_size = 0, padded_data_size = 0;
    int ret, bitpix, naxis3 = 1, i, j, k, bytes_left;
    int map[] = {2, 0, 1, 3}; // mapping from GBRA -> RGBA as RGBA is to be stored in FITS file..

    switch (avctx->pix_fmt) {
    case AV_PIX_FMT_GRAY8:
    case AV_PIX_FMT_GRAY16BE:
        map[0] = 0; // grayscale images should be directly mapped
        if (avctx->pix_fmt == AV_PIX_FMT_GRAY8) {
            bitpix = 8;
        } else {
            bitpix = 16;
        }
        break;
    case AV_PIX_FMT_GBRP:
    case AV_PIX_FMT_GBRAP:
        bitpix = 8;
        if (avctx->pix_fmt == AV_PIX_FMT_GBRP) {
            naxis3 = 3;
        } else {
            naxis3 = 4;
        }
        break;
    case AV_PIX_FMT_GBRP16BE:
    case AV_PIX_FMT_GBRAP16BE:
        bitpix = 16;
        if (avctx->pix_fmt == AV_PIX_FMT_GBRP16BE) {
            naxis3 = 3;
        } else {
            naxis3 = 4;
        }
        break;
    default:
        av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
        return AVERROR(EINVAL);
    }

    data_size = (bitpix >> 3) * avctx->height * avctx->width * naxis3;
    padded_data_size = ((data_size + 2879) / 2880 ) * 2880;

    if ((ret = ff_alloc_packet2(avctx, pkt, padded_data_size, 0)) < 0)
        return ret;

    bytestream_start =
    bytestream       = pkt->data;

    for (k = 0; k < naxis3; k++) {
        for (i = 0; i < avctx->height; i++) {
            ptr = p->data[map[k]] + (avctx->height - i - 1) * p->linesize[map[k]];
            if (bitpix == 16) {
                for (j = 0; j < avctx->width; j++) {
                    // subtracting bzero is equivalent to first bit flip
                    bytestream_put_be16(&bytestream, AV_RB16(ptr) ^ flip);
                    ptr += 2;
                }
            } else {
                memcpy(bytestream, ptr, avctx->width);
                bytestream += avctx->width;
            }
        }
    }

    bytes_left = padded_data_size - data_size;
    memset(bytestream, 0, bytes_left);
    bytestream += bytes_left;

    pkt->size   = bytestream - bytestream_start;
    pkt->flags |= AV_PKT_FLAG_KEY;
    *got_packet = 1;

    return 0;
}

AVCodec ff_fits_encoder = {
    .name           = "fits",
    .long_name      = NULL_IF_CONFIG_SMALL("Flexible Image Transport System"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_FITS,
    .encode2        = fits_encode_frame,
    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_GBRAP16BE,
                                                     AV_PIX_FMT_GBRP16BE,
                                                     AV_PIX_FMT_GBRP,
                                                     AV_PIX_FMT_GBRAP,
                                                     AV_PIX_FMT_GRAY16BE,
                                                     AV_PIX_FMT_GRAY8,
                                                     AV_PIX_FMT_NONE },
};


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* FITS image encoder
3			* Copyright (c) 2017 Paras Chadha
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			/**
23			* @file
24			* FITS image encoder
25			*
26			* Specification: https://fits.gsfc.nasa.gov/fits_standard.html Version 3.0
27			*
28			* RGBA images are encoded as planes in RGBA order. So, NAXIS3 is 3 or 4 for them.
29			* Also CTYPE3 = 'RGB ' is added to the header to distinguish them from 3d images.
30			*/
31
32			#include "libavutil/intreadwrite.h"
33			#include "avcodec.h"
34			#include "bytestream.h"
35			#include "internal.h"
36
37		189	static int fits_encode_frame(AVCodecContext avctx, AVPacket pkt,
38			const AVFrame pict, int got_packet)
39			{
40		189	AVFrame * const p = (AVFrame *)pict;
41			uint8_t bytestream, bytestream_start, *ptr;
42		189	const uint16_t flip = (1 << 15);
43		189	uint64_t data_size = 0, padded_data_size = 0;
44		189	int ret, bitpix, naxis3 = 1, i, j, k, bytes_left;
45		189	int map[] = {2, 0, 1, 3}; // mapping from GBRA -> RGBA as RGBA is to be stored in FITS file..
46
47	✓✓✓✗	189	switch (avctx->pix_fmt) {
48		61	case AV_PIX_FMT_GRAY8:
49			case AV_PIX_FMT_GRAY16BE:
50		61	map[0] = 0; // grayscale images should be directly mapped
51	✓✓	61	if (avctx->pix_fmt == AV_PIX_FMT_GRAY8) {
52		31	bitpix = 8;
53			} else {
54		30	bitpix = 16;
55			}
56		61	break;
57		66	case AV_PIX_FMT_GBRP:
58			case AV_PIX_FMT_GBRAP:
59		66	bitpix = 8;
60	✓✓	66	if (avctx->pix_fmt == AV_PIX_FMT_GBRP) {
61		31	naxis3 = 3;
62			} else {
63		35	naxis3 = 4;
64			}
65		66	break;
66		62	case AV_PIX_FMT_GBRP16BE:
67			case AV_PIX_FMT_GBRAP16BE:
68		62	bitpix = 16;
69	✓✓	62	if (avctx->pix_fmt == AV_PIX_FMT_GBRP16BE) {
70		31	naxis3 = 3;
71			} else {
72		31	naxis3 = 4;
73			}
74		62	break;
75			default:
76			av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
77			return AVERROR(EINVAL);
78			}
79
80		189	data_size = (bitpix >> 3) * avctx->height * avctx->width * naxis3;
81		189	padded_data_size = ((data_size + 2879) / 2880 ) * 2880;
82
83	✗✓	189	if ((ret = ff_alloc_packet2(avctx, pkt, padded_data_size, 0)) < 0)
84			return ret;
85
86		189	bytestream_start =
87		189	bytestream = pkt->data;
88
89	✓✓	700	for (k = 0; k < naxis3; k++) {
90	✓✓	120719	for (i = 0; i < avctx->height; i++) {
91		120208	ptr = p->data[map[k]] + (avctx->height - i - 1) * p->linesize[map[k]];
92	✓✓	120208	if (bitpix == 16) {
93	✓✓	20553504	for (j = 0; j < avctx->width; j++) {
94			// subtracting bzero is equivalent to first bit flip
95		20493568	bytestream_put_be16(&bytestream, AV_RB16(ptr) ^ flip);
96		20493568	ptr += 2;
97			}
98			} else {
99		60272	memcpy(bytestream, ptr, avctx->width);
100		60272	bytestream += avctx->width;
101			}
102			}
103			}
104
105		189	bytes_left = padded_data_size - data_size;
106		189	memset(bytestream, 0, bytes_left);
107		189	bytestream += bytes_left;
108
109		189	pkt->size = bytestream - bytestream_start;
110		189	pkt->flags \|= AV_PKT_FLAG_KEY;
111		189	*got_packet = 1;
112
113		189	return 0;
114			}
115
116			AVCodec ff_fits_encoder = {
117			.name = "fits",
118			.long_name = NULL_IF_CONFIG_SMALL("Flexible Image Transport System"),
119			.type = AVMEDIA_TYPE_VIDEO,
120			.id = AV_CODEC_ID_FITS,
121			.encode2 = fits_encode_frame,
122			.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_GBRAP16BE,
123			AV_PIX_FMT_GBRP16BE,
124			AV_PIX_FMT_GBRP,
125			AV_PIX_FMT_GBRAP,
126			AV_PIX_FMT_GRAY16BE,
127			AV_PIX_FMT_GRAY8,
128			AV_PIX_FMT_NONE },
129			};