FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/sgienc.c	Lines:	81	141	57.4 %
Date:	2021-01-20 23:14:43	Branches:	31	66	47.0 %


/*
 * SGI image encoder
 * Todd Kirby <doubleshot@pacbell.net>
 *
 * 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/opt.h"

#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
#include "sgi.h"
#include "rle.h"

#define SGI_SINGLE_CHAN 2
#define SGI_MULTI_CHAN 3

typedef struct SgiContext {
    AVClass *class;

    int rle;
} SgiContext;

static av_cold int encode_init(AVCodecContext *avctx)
{
    if (avctx->width > 65535 || avctx->height > 65535) {
        av_log(avctx, AV_LOG_ERROR, "Unsupported resolution %dx%d. "
               "SGI does not support resolutions above 65535x65535\n",
               avctx->width, avctx->height);
        return AVERROR_INVALIDDATA;
    }

    return 0;
}

static int sgi_rle_encode(PutByteContext *pbc, const uint8_t *src,
                          int w, int bpp)
{
    int val, count, x, start = bytestream2_tell_p(pbc);
    void (*bytestream2_put)(PutByteContext *, unsigned int);

    if (bpp == 1)
        bytestream2_put = bytestream2_put_byte;
    else
        bytestream2_put = bytestream2_put_be16;

    for (x = 0; x < w; x += count) {
        /* see if we can encode the next set of pixels with RLE */
        count = ff_rle_count_pixels(src, w - x, bpp, 1);
        if (count > 1) {
            if (bytestream2_get_bytes_left_p(pbc) < bpp * 2)
                return AVERROR_INVALIDDATA;

            val = bpp == 1 ? *src : AV_RB16(src);
            bytestream2_put(pbc, count);
            bytestream2_put(pbc, val);
        } else {
            int i;
            /* fall back on uncompressed */
            count = ff_rle_count_pixels(src, w - x, bpp, 0);
            if (bytestream2_get_bytes_left_p(pbc) < bpp * (count + 1))
                return AVERROR_INVALIDDATA;

            bytestream2_put(pbc, count + 0x80);
            for (i = 0; i < count; i++) {
                val = bpp == 1 ? src[i] : AV_RB16(src + i * bpp);
                bytestream2_put(pbc, val);
            }
        }

        src += count * bpp;
    }

    return bytestream2_tell_p(pbc) - start;
}

static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                        const AVFrame *frame, int *got_packet)
{
    SgiContext *s = avctx->priv_data;
    const AVFrame * const p = frame;
    PutByteContext pbc;
    uint8_t *in_buf, *encode_buf;
    int x, y, z, length, tablesize, ret, i;
    unsigned int width, height, depth, dimension;
    unsigned int bytes_per_channel, pixmax, put_be;

#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
    avctx->coded_frame->key_frame = 1;
FF_ENABLE_DEPRECATION_WARNINGS
#endif

#if FF_API_CODER_TYPE
FF_DISABLE_DEPRECATION_WARNINGS
    if (avctx->coder_type == FF_CODER_TYPE_RAW)
        s->rle = 0;
FF_ENABLE_DEPRECATION_WARNINGS
#endif

    width  = avctx->width;
    height = avctx->height;
    bytes_per_channel = 1;
    pixmax = 0xFF;
    put_be = HAVE_BIGENDIAN;

    switch (avctx->pix_fmt) {
    case AV_PIX_FMT_GRAY8:
        dimension = SGI_SINGLE_CHAN;
        depth     = SGI_GRAYSCALE;
        break;
    case AV_PIX_FMT_RGB24:
        dimension = SGI_MULTI_CHAN;
        depth     = SGI_RGB;
        break;
    case AV_PIX_FMT_RGBA:
        dimension = SGI_MULTI_CHAN;
        depth     = SGI_RGBA;
        break;
    case AV_PIX_FMT_GRAY16LE:
        put_be = !HAVE_BIGENDIAN;
    case AV_PIX_FMT_GRAY16BE:
        bytes_per_channel = 2;
        pixmax = 0xFFFF;
        dimension = SGI_SINGLE_CHAN;
        depth     = SGI_GRAYSCALE;
        break;
    case AV_PIX_FMT_RGB48LE:
        put_be = !HAVE_BIGENDIAN;
    case AV_PIX_FMT_RGB48BE:
        bytes_per_channel = 2;
        pixmax = 0xFFFF;
        dimension = SGI_MULTI_CHAN;
        depth     = SGI_RGB;
        break;
    case AV_PIX_FMT_RGBA64LE:
        put_be = !HAVE_BIGENDIAN;
    case AV_PIX_FMT_RGBA64BE:
        bytes_per_channel = 2;
        pixmax = 0xFFFF;
        dimension = SGI_MULTI_CHAN;
        depth     = SGI_RGBA;
        break;
    default:
        return AVERROR_INVALIDDATA;
    }

    tablesize = depth * height * 4;
    length = SGI_HEADER_SIZE;
    if (!s->rle)
        length += depth * height * width;
    else // assume sgi_rle_encode() produces at most 2x size of input
        length += tablesize * 2 + depth * height * (2 * width + 1);

    if ((ret = ff_alloc_packet2(avctx, pkt, bytes_per_channel * length, 0)) < 0)
        return ret;

    bytestream2_init_writer(&pbc, pkt->data, pkt->size);

    /* Encode header. */
    bytestream2_put_be16(&pbc, SGI_MAGIC);
    bytestream2_put_byte(&pbc, s->rle); /* RLE 1 - VERBATIM 0 */
    bytestream2_put_byte(&pbc, bytes_per_channel);
    bytestream2_put_be16(&pbc, dimension);
    bytestream2_put_be16(&pbc, width);
    bytestream2_put_be16(&pbc, height);
    bytestream2_put_be16(&pbc, depth);

    bytestream2_put_be32(&pbc, 0L); /* pixmin */
    bytestream2_put_be32(&pbc, pixmax);
    bytestream2_put_be32(&pbc, 0L); /* dummy */

    /* name */
    for (i = 0; i < 80; i++)
        bytestream2_put_byte(&pbc, 0L);

    /* colormap */
    bytestream2_put_be32(&pbc, 0L);

    /* The rest of the 512 byte header is unused. */
    for (i = 0; i < 404; i++)
        bytestream2_put_byte(&pbc, 0L);

    if (s->rle) {
        PutByteContext taboff_pcb, tablen_pcb;

        /* Skip RLE offset table. */
        bytestream2_init_writer(&taboff_pcb, pbc.buffer, tablesize);
        bytestream2_skip_p(&pbc, tablesize);

        /* Skip RLE length table. */
        bytestream2_init_writer(&tablen_pcb, pbc.buffer, tablesize);
        bytestream2_skip_p(&pbc, tablesize);

        /* Make an intermediate consecutive buffer. */
        if (!(encode_buf = av_malloc(width * bytes_per_channel)))
            return AVERROR(ENOMEM);

        for (z = 0; z < depth; z++) {
            in_buf = p->data[0] + p->linesize[0] * (height - 1) + z * bytes_per_channel;

            for (y = 0; y < height; y++) {
                bytestream2_put_be32(&taboff_pcb, bytestream2_tell_p(&pbc));

                for (x = 0; x < width * bytes_per_channel; x += bytes_per_channel)
                    if (bytes_per_channel == 1) {
                        encode_buf[x]     = in_buf[depth * x];
                    } else if (HAVE_BIGENDIAN ^ put_be) {
                        encode_buf[x + 1] = in_buf[depth * x];
                        encode_buf[x]     = in_buf[depth * x + 1];
                    } else {
                        encode_buf[x]     = in_buf[depth * x];
                        encode_buf[x + 1] = in_buf[depth * x + 1];
                    }

                length = sgi_rle_encode(&pbc, encode_buf, width,
                                        bytes_per_channel);
                if (length < 1) {
                    av_free(encode_buf);
                    return AVERROR_INVALIDDATA;
                }

                bytestream2_put_be32(&tablen_pcb, length);
                in_buf -= p->linesize[0];
            }
        }

        av_free(encode_buf);
    } else {
        for (z = 0; z < depth; z++) {
            in_buf = p->data[0] + p->linesize[0] * (height - 1) + z * bytes_per_channel;

            for (y = 0; y < height; y++) {
                for (x = 0; x < width * depth; x += depth)
                    if (bytes_per_channel == 1)
                        bytestream2_put_byte(&pbc, in_buf[x]);
                    else
                        if (put_be)
                            bytestream2_put_be16(&pbc, ((uint16_t *)in_buf)[x]);
                        else
                            bytestream2_put_le16(&pbc, ((uint16_t *)in_buf)[x]);

                in_buf -= p->linesize[0];
            }
        }
    }

    /* total length */
    pkt->size   = bytestream2_tell_p(&pbc);
    pkt->flags |= AV_PKT_FLAG_KEY;
    *got_packet = 1;

    return 0;
}

#define OFFSET(x) offsetof(SgiContext, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
    { "rle", "Use run-length compression", OFFSET(rle), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE },

    { NULL },
};

static const AVClass sgi_class = {
    .class_name = "sgi",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
};

AVCodec ff_sgi_encoder = {
    .name      = "sgi",
    .long_name = NULL_IF_CONFIG_SMALL("SGI image"),
    .type      = AVMEDIA_TYPE_VIDEO,
    .id        = AV_CODEC_ID_SGI,
    .priv_data_size = sizeof(SgiContext),
    .priv_class = &sgi_class,
    .init      = encode_init,
    .encode2   = encode_frame,
    .pix_fmts  = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA,
        AV_PIX_FMT_RGB48LE, AV_PIX_FMT_RGB48BE,
        AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_RGBA64BE,
        AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_GRAY8,
        AV_PIX_FMT_NONE
    },
    .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
};


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* SGI image encoder
3			* Todd Kirby <doubleshot@pacbell.net>
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/opt.h"
23
24			#include "avcodec.h"
25			#include "bytestream.h"
26			#include "internal.h"
27			#include "sgi.h"
28			#include "rle.h"
29
30			#define SGI_SINGLE_CHAN 2
31			#define SGI_MULTI_CHAN 3
32
33			typedef struct SgiContext {
34			AVClass *class;
35
36			int rle;
37			} SgiContext;
38
39		1	static av_cold int encode_init(AVCodecContext *avctx)
40			{
41	✓✗✗✓	1	if (avctx->width > 65535 \|\| avctx->height > 65535) {
42			av_log(avctx, AV_LOG_ERROR, "Unsupported resolution %dx%d. "
43			"SGI does not support resolutions above 65535x65535\n",
44			avctx->width, avctx->height);
45			return AVERROR_INVALIDDATA;
46			}
47
48		1	return 0;
49			}
50
51		11232	static int sgi_rle_encode(PutByteContext pbc, const uint8_t src,
52			int w, int bpp)
53			{
54		11232	int val, count, x, start = bytestream2_tell_p(pbc);
55			void (bytestream2_put)(PutByteContext , unsigned int);
56
57	✓✗	11232	if (bpp == 1)
58		11232	bytestream2_put = bytestream2_put_byte;
59			else
60			bytestream2_put = bytestream2_put_be16;
61
62	✓✓	97313	for (x = 0; x < w; x += count) {
63			/* see if we can encode the next set of pixels with RLE */
64		86081	count = ff_rle_count_pixels(src, w - x, bpp, 1);
65	✓✓	86081	if (count > 1) {
66	✗✓	34170	if (bytestream2_get_bytes_left_p(pbc) < bpp * 2)
67			return AVERROR_INVALIDDATA;
68
69	✓✗	34170	val = bpp == 1 ? *src : AV_RB16(src);
70		34170	bytestream2_put(pbc, count);
71		34170	bytestream2_put(pbc, val);
72			} else {
73			int i;
74			/* fall back on uncompressed */
75		51911	count = ff_rle_count_pixels(src, w - x, bpp, 0);
76	✗✓	51911	if (bytestream2_get_bytes_left_p(pbc) < bpp * (count + 1))
77			return AVERROR_INVALIDDATA;
78
79		51911	bytestream2_put(pbc, count + 0x80);
80	✓✓	3834780	for (i = 0; i < count; i++) {
81	✓✗	3782869	val = bpp == 1 ? src[i] : AV_RB16(src + i * bpp);
82		3782869	bytestream2_put(pbc, val);
83			}
84			}
85
86		86081	src += count * bpp;
87			}
88
89		11232	return bytestream2_tell_p(pbc) - start;
90			}
91
92		13	static int encode_frame(AVCodecContext avctx, AVPacket pkt,
93			const AVFrame frame, int got_packet)
94			{
95		13	SgiContext *s = avctx->priv_data;
96		13	const AVFrame * const p = frame;
97			PutByteContext pbc;
98			uint8_t in_buf, encode_buf;
99			int x, y, z, length, tablesize, ret, i;
100			unsigned int width, height, depth, dimension;
101			unsigned int bytes_per_channel, pixmax, put_be;
102
103			#if FF_API_CODED_FRAME
104			FF_DISABLE_DEPRECATION_WARNINGS
105		13	avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
106		13	avctx->coded_frame->key_frame = 1;
107			FF_ENABLE_DEPRECATION_WARNINGS
108			#endif
109
110			#if FF_API_CODER_TYPE
111			FF_DISABLE_DEPRECATION_WARNINGS
112	✗✓	13	if (avctx->coder_type == FF_CODER_TYPE_RAW)
113			s->rle = 0;
114			FF_ENABLE_DEPRECATION_WARNINGS
115			#endif
116
117		13	width = avctx->width;
118		13	height = avctx->height;
119		13	bytes_per_channel = 1;
120		13	pixmax = 0xFF;
121		13	put_be = HAVE_BIGENDIAN;
122
123	✗✓✗✗ ✗✗✗✗ ✗✗	13	switch (avctx->pix_fmt) {
124			case AV_PIX_FMT_GRAY8:
125			dimension = SGI_SINGLE_CHAN;
126			depth = SGI_GRAYSCALE;
127			break;
128		13	case AV_PIX_FMT_RGB24:
129		13	dimension = SGI_MULTI_CHAN;
130		13	depth = SGI_RGB;
131		13	break;
132			case AV_PIX_FMT_RGBA:
133			dimension = SGI_MULTI_CHAN;
134			depth = SGI_RGBA;
135			break;
136			case AV_PIX_FMT_GRAY16LE:
137			put_be = !HAVE_BIGENDIAN;
138			case AV_PIX_FMT_GRAY16BE:
139			bytes_per_channel = 2;
140			pixmax = 0xFFFF;
141			dimension = SGI_SINGLE_CHAN;
142			depth = SGI_GRAYSCALE;
143			break;
144			case AV_PIX_FMT_RGB48LE:
145			put_be = !HAVE_BIGENDIAN;
146			case AV_PIX_FMT_RGB48BE:
147			bytes_per_channel = 2;
148			pixmax = 0xFFFF;
149			dimension = SGI_MULTI_CHAN;
150			depth = SGI_RGB;
151			break;
152			case AV_PIX_FMT_RGBA64LE:
153			put_be = !HAVE_BIGENDIAN;
154			case AV_PIX_FMT_RGBA64BE:
155			bytes_per_channel = 2;
156			pixmax = 0xFFFF;
157			dimension = SGI_MULTI_CHAN;
158			depth = SGI_RGBA;
159			break;
160			default:
161			return AVERROR_INVALIDDATA;
162			}
163
164		13	tablesize = depth * height * 4;
165		13	length = SGI_HEADER_SIZE;
166	✗✓	13	if (!s->rle)
167			length += depth * height * width;
168			else // assume sgi_rle_encode() produces at most 2x size of input
169		13	length += tablesize * 2 + depth * height * (2 * width + 1);
170
171	✗✓	13	if ((ret = ff_alloc_packet2(avctx, pkt, bytes_per_channel * length, 0)) < 0)
172			return ret;
173
174		13	bytestream2_init_writer(&pbc, pkt->data, pkt->size);
175
176			/* Encode header. */
177		13	bytestream2_put_be16(&pbc, SGI_MAGIC);
178		13	bytestream2_put_byte(&pbc, s->rle); /* RLE 1 - VERBATIM 0 */
179		13	bytestream2_put_byte(&pbc, bytes_per_channel);
180		13	bytestream2_put_be16(&pbc, dimension);
181		13	bytestream2_put_be16(&pbc, width);
182		13	bytestream2_put_be16(&pbc, height);
183		13	bytestream2_put_be16(&pbc, depth);
184
185		13	bytestream2_put_be32(&pbc, 0L); /* pixmin */
186		13	bytestream2_put_be32(&pbc, pixmax);
187		13	bytestream2_put_be32(&pbc, 0L); /* dummy */
188
189			/* name */
190	✓✓	1053	for (i = 0; i < 80; i++)
191		1040	bytestream2_put_byte(&pbc, 0L);
192
193			/* colormap */
194		13	bytestream2_put_be32(&pbc, 0L);
195
196			/* The rest of the 512 byte header is unused. */
197	✓✓	5265	for (i = 0; i < 404; i++)
198		5252	bytestream2_put_byte(&pbc, 0L);
199
200	✓✗	13	if (s->rle) {
201			PutByteContext taboff_pcb, tablen_pcb;
202
203			/* Skip RLE offset table. */
204		13	bytestream2_init_writer(&taboff_pcb, pbc.buffer, tablesize);
205		13	bytestream2_skip_p(&pbc, tablesize);
206
207			/* Skip RLE length table. */
208		13	bytestream2_init_writer(&tablen_pcb, pbc.buffer, tablesize);
209		13	bytestream2_skip_p(&pbc, tablesize);
210
211			/* Make an intermediate consecutive buffer. */
212	✗✓	13	if (!(encode_buf = av_malloc(width * bytes_per_channel)))
213			return AVERROR(ENOMEM);
214
215	✓✓	52	for (z = 0; z < depth; z++) {
216		39	in_buf = p->data[0] + p->linesize[0] * (height - 1) + z * bytes_per_channel;
217
218	✓✓	11271	for (y = 0; y < height; y++) {
219		11232	bytestream2_put_be32(&taboff_pcb, bytestream2_tell_p(&pbc));
220
221	✓✓	3964896	for (x = 0; x < width * bytes_per_channel; x += bytes_per_channel)
222	✓✗	3953664	if (bytes_per_channel == 1) {
223		3953664	encode_buf[x] = in_buf[depth * x];
224			} else if (HAVE_BIGENDIAN ^ put_be) {
225			encode_buf[x + 1] = in_buf[depth * x];
226			encode_buf[x] = in_buf[depth * x + 1];
227			} else {
228			encode_buf[x] = in_buf[depth * x];
229			encode_buf[x + 1] = in_buf[depth * x + 1];
230			}
231
232		11232	length = sgi_rle_encode(&pbc, encode_buf, width,
233			bytes_per_channel);
234	✗✓	11232	if (length < 1) {
235			av_free(encode_buf);
236			return AVERROR_INVALIDDATA;
237			}
238
239		11232	bytestream2_put_be32(&tablen_pcb, length);
240		11232	in_buf -= p->linesize[0];
241			}
242			}
243
244		13	av_free(encode_buf);
245			} else {
246			for (z = 0; z < depth; z++) {
247			in_buf = p->data[0] + p->linesize[0] * (height - 1) + z * bytes_per_channel;
248
249			for (y = 0; y < height; y++) {
250			for (x = 0; x < width * depth; x += depth)
251			if (bytes_per_channel == 1)
252			bytestream2_put_byte(&pbc, in_buf[x]);
253			else
254			if (put_be)
255			bytestream2_put_be16(&pbc, ((uint16_t *)in_buf)[x]);
256			else
257			bytestream2_put_le16(&pbc, ((uint16_t *)in_buf)[x]);
258
259			in_buf -= p->linesize[0];
260			}
261			}
262			}
263
264			/* total length */
265		13	pkt->size = bytestream2_tell_p(&pbc);
266		13	pkt->flags \|= AV_PKT_FLAG_KEY;
267		13	*got_packet = 1;
268
269		13	return 0;
270			}
271
272			#define OFFSET(x) offsetof(SgiContext, x)
273			#define VE AV_OPT_FLAG_VIDEO_PARAM \| AV_OPT_FLAG_ENCODING_PARAM
274			static const AVOption options[] = {
275			{ "rle", "Use run-length compression", OFFSET(rle), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE },
276
277			{ NULL },
278			};
279
280			static const AVClass sgi_class = {
281			.class_name = "sgi",
282			.item_name = av_default_item_name,
283			.option = options,
284			.version = LIBAVUTIL_VERSION_INT,
285			};
286
287			AVCodec ff_sgi_encoder = {
288			.name = "sgi",
289			.long_name = NULL_IF_CONFIG_SMALL("SGI image"),
290			.type = AVMEDIA_TYPE_VIDEO,
291			.id = AV_CODEC_ID_SGI,
292			.priv_data_size = sizeof(SgiContext),
293			.priv_class = &sgi_class,
294			.init = encode_init,
295			.encode2 = encode_frame,
296			.pix_fmts = (const enum AVPixelFormat[]) {
297			AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA,
298			AV_PIX_FMT_RGB48LE, AV_PIX_FMT_RGB48BE,
299			AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_RGBA64BE,
300			AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_GRAY8,
301			AV_PIX_FMT_NONE
302			},
303			.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
304			};