FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/sunrast.c	Lines:	74	126	58.7 %
Date:	2020-10-23 17:01:47	Branches:	53	90	58.9 %


/*
 * Sun Rasterfile (.sun/.ras/im{1,8,24}/.sunras) image decoder
 * Copyright (c) 2007, 2008 Ivo van Poorten
 *
 * 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
 */

#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "internal.h"
#include "sunrast.h"

static int sunrast_decode_frame(AVCodecContext *avctx, void *data,
                                int *got_frame, AVPacket *avpkt)
{
    const uint8_t *buf       = avpkt->data;
    const uint8_t *buf_end   = avpkt->data + avpkt->size;
    AVFrame * const p        = data;
    unsigned int w, h, depth, type, maptype, maplength, stride, x, y, len, alen;
    uint8_t *ptr, *ptr2 = NULL;
    const uint8_t *bufstart = buf;
    int ret;

    if (avpkt->size < 32)
        return AVERROR_INVALIDDATA;

    if (AV_RB32(buf) != RAS_MAGIC) {
        av_log(avctx, AV_LOG_ERROR, "this is not sunras encoded data\n");
        return AVERROR_INVALIDDATA;
    }

    w         = AV_RB32(buf + 4);
    h         = AV_RB32(buf + 8);
    depth     = AV_RB32(buf + 12);
    type      = AV_RB32(buf + 20);
    maptype   = AV_RB32(buf + 24);
    maplength = AV_RB32(buf + 28);
    buf      += 32;

    if (type == RT_EXPERIMENTAL) {
        avpriv_request_sample(avctx, "TIFF/IFF/EXPERIMENTAL (compression) type");
        return AVERROR_PATCHWELCOME;
    }
    if (type > RT_FORMAT_IFF) {
        av_log(avctx, AV_LOG_ERROR, "invalid (compression) type\n");
        return AVERROR_INVALIDDATA;
    }
    if (maptype == RMT_RAW) {
        avpriv_request_sample(avctx, "Unknown colormap type");
        return AVERROR_PATCHWELCOME;
    }
    if (maptype > RMT_RAW) {
        av_log(avctx, AV_LOG_ERROR, "invalid colormap type\n");
        return AVERROR_INVALIDDATA;
    }

    if (type == RT_FORMAT_TIFF || type == RT_FORMAT_IFF) {
        av_log(avctx, AV_LOG_ERROR, "unsupported (compression) type\n");
        return AVERROR_PATCHWELCOME;
    }

    switch (depth) {
        case 1:
            avctx->pix_fmt = maplength ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_MONOWHITE;
            break;
        case 4:
            avctx->pix_fmt = maplength ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_NONE;
            break;
        case 8:
            avctx->pix_fmt = maplength ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8;
            break;
        case 24:
            avctx->pix_fmt = (type == RT_FORMAT_RGB) ? AV_PIX_FMT_RGB24 : AV_PIX_FMT_BGR24;
            break;
        case 32:
            avctx->pix_fmt = (type == RT_FORMAT_RGB) ? AV_PIX_FMT_0RGB : AV_PIX_FMT_0BGR;
            break;
        default:
            av_log(avctx, AV_LOG_ERROR, "invalid depth\n");
            return AVERROR_INVALIDDATA;
    }

    ret = ff_set_dimensions(avctx, w, h);
    if (ret < 0)
        return ret;

    /* scanlines are aligned on 16 bit boundaries */
    len  = (depth * w + 7) >> 3;
    alen = len + (len & 1);

    if (buf_end - buf < maplength + (len * h) * 3 / 256)
        return AVERROR_INVALIDDATA;

    if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
        return ret;

    p->pict_type = AV_PICTURE_TYPE_I;

    if (depth > 8 && maplength) {
        av_log(avctx, AV_LOG_WARNING, "useless colormap found or file is corrupted, trying to recover\n");

    } else if (maplength) {
        unsigned int len = maplength / 3;

        if (maplength % 3 || maplength > 768) {
            av_log(avctx, AV_LOG_WARNING, "invalid colormap length\n");
            return AVERROR_INVALIDDATA;
        }

        ptr = p->data[1];
        for (x = 0; x < len; x++, ptr += 4)
            *(uint32_t *)ptr = (0xFFU<<24) + (buf[x]<<16) + (buf[len+x]<<8) + buf[len+len+x];
    }

    buf += maplength;

    if (maplength && depth < 8) {
        ptr = ptr2 = av_malloc_array((w + 15), h);
        if (!ptr)
            return AVERROR(ENOMEM);
        stride = (w + 15 >> 3) * depth;
    } else {
        ptr    = p->data[0];
        stride = p->linesize[0];
    }

    if (type == RT_BYTE_ENCODED) {
        int value, run;
        uint8_t *end = ptr + h * stride;

        x = 0;
        while (ptr != end && buf < buf_end) {
            run = 1;
            if (buf_end - buf < 1)
                return AVERROR_INVALIDDATA;

            if ((value = *buf++) == RLE_TRIGGER) {
                run = *buf++ + 1;
                if (run != 1)
                    value = *buf++;
            }
            while (run--) {
                if (x < len)
                    ptr[x] = value;
                if (++x >= alen) {
                    x = 0;
                    ptr += stride;
                    if (ptr == end)
                        break;
                }
            }
        }
    } else {
        for (y = 0; y < h; y++) {
            if (buf_end - buf < alen)
                break;
            memcpy(ptr, buf, len);
            ptr += stride;
            buf += alen;
        }
    }
    if (avctx->pix_fmt == AV_PIX_FMT_PAL8 && depth < 8) {
        uint8_t *ptr_free = ptr2;
        ptr = p->data[0];
        for (y=0; y<h; y++) {
            for (x = 0; x < (w + 7 >> 3) * depth; x++) {
                if (depth == 1) {
                    ptr[8*x]   = ptr2[x] >> 7;
                    ptr[8*x+1] = ptr2[x] >> 6 & 1;
                    ptr[8*x+2] = ptr2[x] >> 5 & 1;
                    ptr[8*x+3] = ptr2[x] >> 4 & 1;
                    ptr[8*x+4] = ptr2[x] >> 3 & 1;
                    ptr[8*x+5] = ptr2[x] >> 2 & 1;
                    ptr[8*x+6] = ptr2[x] >> 1 & 1;
                    ptr[8*x+7] = ptr2[x]      & 1;
                } else {
                    ptr[2*x]   = ptr2[x] >> 4;
                    ptr[2*x+1] = ptr2[x] & 0xF;
                }
            }
            ptr  += p->linesize[0];
            ptr2 += (w + 15 >> 3) * depth;
        }
        av_freep(&ptr_free);
    }

    *got_frame = 1;

    return buf - bufstart;
}

AVCodec ff_sunrast_decoder = {
    .name           = "sunrast",
    .long_name      = NULL_IF_CONFIG_SMALL("Sun Rasterfile image"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_SUNRAST,
    .decode         = sunrast_decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1,
};


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* Sun Rasterfile (.sun/.ras/im{1,8,24}/.sunras) image decoder
3			* Copyright (c) 2007, 2008 Ivo van Poorten
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 "libavutil/common.h"
23			#include "libavutil/intreadwrite.h"
24			#include "libavutil/imgutils.h"
25			#include "avcodec.h"
26			#include "internal.h"
27			#include "sunrast.h"
28
29		28	static int sunrast_decode_frame(AVCodecContext avctx, void data,
30			int got_frame, AVPacket avpkt)
31			{
32		28	const uint8_t *buf = avpkt->data;
33		28	const uint8_t *buf_end = avpkt->data + avpkt->size;
34		28	AVFrame * const p = data;
35			unsigned int w, h, depth, type, maptype, maplength, stride, x, y, len, alen;
36		28	uint8_t ptr, ptr2 = NULL;
37		28	const uint8_t *bufstart = buf;
38			int ret;
39
40	✗✓	28	if (avpkt->size < 32)
41			return AVERROR_INVALIDDATA;
42
43	✗✓	28	if (AV_RB32(buf) != RAS_MAGIC) {
44			av_log(avctx, AV_LOG_ERROR, "this is not sunras encoded data\n");
45			return AVERROR_INVALIDDATA;
46			}
47
48		28	w = AV_RB32(buf + 4);
49		28	h = AV_RB32(buf + 8);
50		28	depth = AV_RB32(buf + 12);
51		28	type = AV_RB32(buf + 20);
52		28	maptype = AV_RB32(buf + 24);
53		28	maplength = AV_RB32(buf + 28);
54		28	buf += 32;
55
56	✗✓	28	if (type == RT_EXPERIMENTAL) {
57			avpriv_request_sample(avctx, "TIFF/IFF/EXPERIMENTAL (compression) type");
58			return AVERROR_PATCHWELCOME;
59			}
60	✗✓	28	if (type > RT_FORMAT_IFF) {
61			av_log(avctx, AV_LOG_ERROR, "invalid (compression) type\n");
62			return AVERROR_INVALIDDATA;
63			}
64	✗✓	28	if (maptype == RMT_RAW) {
65			avpriv_request_sample(avctx, "Unknown colormap type");
66			return AVERROR_PATCHWELCOME;
67			}
68	✗✓	28	if (maptype > RMT_RAW) {
69			av_log(avctx, AV_LOG_ERROR, "invalid colormap type\n");
70			return AVERROR_INVALIDDATA;
71			}
72
73	✓✗✗✓	28	if (type == RT_FORMAT_TIFF \|\| type == RT_FORMAT_IFF) {
74			av_log(avctx, AV_LOG_ERROR, "unsupported (compression) type\n");
75			return AVERROR_PATCHWELCOME;
76			}
77
78	✓✗✓✓ ✗✗	28	switch (depth) {
79		4	case 1:
80	✗✓	4	avctx->pix_fmt = maplength ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_MONOWHITE;
81		4	break;
82			case 4:
83			avctx->pix_fmt = maplength ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_NONE;
84			break;
85		6	case 8:
86	✓✓	6	avctx->pix_fmt = maplength ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8;
87		6	break;
88		18	case 24:
89	✗✓	18	avctx->pix_fmt = (type == RT_FORMAT_RGB) ? AV_PIX_FMT_RGB24 : AV_PIX_FMT_BGR24;
90		18	break;
91			case 32:
92			avctx->pix_fmt = (type == RT_FORMAT_RGB) ? AV_PIX_FMT_0RGB : AV_PIX_FMT_0BGR;
93			break;
94			default:
95			av_log(avctx, AV_LOG_ERROR, "invalid depth\n");
96			return AVERROR_INVALIDDATA;
97			}
98
99		28	ret = ff_set_dimensions(avctx, w, h);
100	✗✓	28	if (ret < 0)
101			return ret;
102
103			/* scanlines are aligned on 16 bit boundaries */
104		28	len = (depth * w + 7) >> 3;
105		28	alen = len + (len & 1);
106
107	✗✓	28	if (buf_end - buf < maplength + (len * h) * 3 / 256)
108			return AVERROR_INVALIDDATA;
109
110	✗✓	28	if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
111			return ret;
112
113		28	p->pict_type = AV_PICTURE_TYPE_I;
114
115	✓✓✗✓	28	if (depth > 8 && maplength) {
116			av_log(avctx, AV_LOG_WARNING, "useless colormap found or file is corrupted, trying to recover\n");
117
118	✓✓	28	} else if (maplength) {
119		4	unsigned int len = maplength / 3;
120
121	✓✗✗✓	4	if (maplength % 3 \|\| maplength > 768) {
122			av_log(avctx, AV_LOG_WARNING, "invalid colormap length\n");
123			return AVERROR_INVALIDDATA;
124			}
125
126		4	ptr = p->data[1];
127	✓✓	1028	for (x = 0; x < len; x++, ptr += 4)
128		1024	(uint32_t )ptr = (0xFFU<<24) + (buf[x]<<16) + (buf[len+x]<<8) + buf[len+len+x];
129			}
130
131		28	buf += maplength;
132
133	✓✓✗✓	28	if (maplength && depth < 8) {
134			ptr = ptr2 = av_malloc_array((w + 15), h);
135			if (!ptr)
136			return AVERROR(ENOMEM);
137			stride = (w + 15 >> 3) * depth;
138			} else {
139		28	ptr = p->data[0];
140		28	stride = p->linesize[0];
141			}
142
143	✓✓	28	if (type == RT_BYTE_ENCODED) {
144			int value, run;
145		20	uint8_t end = ptr + h stride;
146
147		20	x = 0;
148	✓✓✓✗	6339770	while (ptr != end && buf < buf_end) {
149		6339750	run = 1;
150	✗✓	6339750	if (buf_end - buf < 1)
151			return AVERROR_INVALIDDATA;
152
153	✓✓	6339750	if ((value = *buf++) == RLE_TRIGGER) {
154		37867	run = *buf++ + 1;
155	✓✓	37867	if (run != 1)
156		27727	value = *buf++;
157			}
158	✓✓	12760210	while (run--) {
159	✓✗	6420480	if (x < len)
160		6420480	ptr[x] = value;
161	✓✓	6420480	if (++x >= alen) {
162		7104	x = 0;
163		7104	ptr += stride;
164	✓✓	7104	if (ptr == end)
165		20	break;
166			}
167			}
168			}
169			} else {
170	✓✓	4616	for (y = 0; y < h; y++) {
171	✗✓	4608	if (buf_end - buf < alen)
172			break;
173		4608	memcpy(ptr, buf, len);
174		4608	ptr += stride;
175		4608	buf += alen;
176			}
177			}
178	✓✓✗✓	28	if (avctx->pix_fmt == AV_PIX_FMT_PAL8 && depth < 8) {
179			uint8_t *ptr_free = ptr2;
180			ptr = p->data[0];
181			for (y=0; y<h; y++) {
182			for (x = 0; x < (w + 7 >> 3) * depth; x++) {
183			if (depth == 1) {
184			ptr[8*x] = ptr2[x] >> 7;
185			ptr[8*x+1] = ptr2[x] >> 6 & 1;
186			ptr[8*x+2] = ptr2[x] >> 5 & 1;
187			ptr[8*x+3] = ptr2[x] >> 4 & 1;
188			ptr[8*x+4] = ptr2[x] >> 3 & 1;
189			ptr[8*x+5] = ptr2[x] >> 2 & 1;
190			ptr[8*x+6] = ptr2[x] >> 1 & 1;
191			ptr[8*x+7] = ptr2[x] & 1;
192			} else {
193			ptr[2*x] = ptr2[x] >> 4;
194			ptr[2*x+1] = ptr2[x] & 0xF;
195			}
196			}
197			ptr += p->linesize[0];
198			ptr2 += (w + 15 >> 3) * depth;
199			}
200			av_freep(&ptr_free);
201			}
202
203		28	*got_frame = 1;
204
205		28	return buf - bufstart;
206			}
207
208			AVCodec ff_sunrast_decoder = {
209			.name = "sunrast",
210			.long_name = NULL_IF_CONFIG_SMALL("Sun Rasterfile image"),
211			.type = AVMEDIA_TYPE_VIDEO,
212			.id = AV_CODEC_ID_SUNRAST,
213			.decode = sunrast_decode_frame,
214			.capabilities = AV_CODEC_CAP_DR1,
215			};