libavcodec/prores_parser.c - FFmpeg coverage

libavcodec/prores_parser.c

Line	Branch	Exec	Source
1			/*
2			* This file is part of FFmpeg.
3			*
4			* FFmpeg is free software; you can redistribute it and/or
5			* modify it under the terms of the GNU Lesser General Public
6			* License as published by the Free Software Foundation; either
7			* version 2.1 of the License, or (at your option) any later version.
8			*
9			* FFmpeg is distributed in the hope that it will be useful,
10			* but WITHOUT ANY WARRANTY; without even the implied warranty of
11			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12			* Lesser General Public License for more details.
13			*
14			* You should have received a copy of the GNU Lesser General Public
15			* License along with FFmpeg; if not, write to the Free Software
16			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17			*/
18
19			#include "libavutil/intreadwrite.h"
20			#include "bytestream.h"
21
22			#include "avcodec.h"
23			#include "parser_internal.h"
24
25		1102	static int parse(AVCodecParserContext *s,
26			AVCodecContext *avctx,
27			const uint8_t *poutbuf, int poutbuf_size,
28			const uint8_t *buf, int buf_size)
29			{
30			GetByteContext gb;
31			uint8_t flags, depth, chroma_format, alpha_channel_type;
32
33		1102	*poutbuf = buf;
34		1102	*poutbuf_size = buf_size;
35
36			/* Frame fields + frame header size */
37	2/2 ✓ Branch 2 → 3 taken 42 times. ✓ Branch 2 → 4 taken 1060 times.	1102	if (buf_size < 28)
38		42	return buf_size;
39
40		1060	bytestream2_init(&gb, buf, buf_size);
41
42			/* Frame size */
43	1/2 ✗ Branch 6 → 7 not taken. ✓ Branch 6 → 8 taken 1060 times.	1060	if (bytestream2_get_be32(&gb) != buf_size)
44		✗	return buf_size;
45
46			/* Frame identifier */
47	1/2 ✗ Branch 9 → 10 not taken. ✓ Branch 9 → 11 taken 1060 times.	1060	if (bytestream2_get_le32(&gb) != MKTAG('i','c','p','f'))
48		✗	return buf_size;
49
50			/* Frame header size */
51	1/2 ✗ Branch 12 → 13 not taken. ✓ Branch 12 → 14 taken 1060 times.	1060	if (bytestream2_get_be16(&gb) < 20)
52		✗	return buf_size;
53
54		1060	bytestream2_skip(&gb, 6); /* Bitstream version, encoder identifier */
55
56		1060	s->key_frame = 1;
57		1060	s->pict_type = AV_PICTURE_TYPE_I;
58
59		1060	s->width = bytestream2_get_be16(&gb);
60		1060	s->height = bytestream2_get_be16(&gb);
61		1060	s->coded_width = FFALIGN(s->width, 16);
62		1060	s->coded_height = FFALIGN(s->height, 16);
63
64		1060	flags = bytestream2_get_byte(&gb);
65
66			/* Interlace mode */
67	3/4 ✓ Branch 18 → 19 taken 634 times. ✓ Branch 18 → 20 taken 400 times. ✓ Branch 18 → 21 taken 26 times. ✗ Branch 18 → 22 not taken.	1060	switch (flags >> 2 & 3) {
68		634	case 0:
69		634	s->field_order = AV_FIELD_PROGRESSIVE;
70		634	s->picture_structure = AV_PICTURE_STRUCTURE_FRAME;
71		634	break;
72		400	case 1:
73		400	s->field_order = AV_FIELD_TT;
74		400	s->picture_structure = AV_PICTURE_STRUCTURE_TOP_FIELD;
75		400	break;
76		26	case 2:
77		26	s->field_order = AV_FIELD_BB;
78		26	s->picture_structure = AV_PICTURE_STRUCTURE_BOTTOM_FIELD;
79		26	break;
80		✗	default:
81		✗	break;
82			}
83
84		1060	bytestream2_skip(&gb, 4); /* Aspect ratio information, frame rate code, color primaries, transfer characteristic, matrix coefficients */
85
86			/* Determine pixel format based on color depth, chroma format and alpha type */
87	2/3 ✓ Branch 24 → 25 taken 654 times. ✓ Branch 24 → 26 taken 406 times. ✗ Branch 24 → 27 not taken.	1060	switch (avctx->codec_tag) {
88		654	case MKTAG('a','p','c','o'):
89			case MKTAG('a','p','c','s'):
90			case MKTAG('a','p','c','n'):
91			case MKTAG('a','p','c','h'):
92		654	depth = 10;
93		654	break;
94		406	case MKTAG('a','p','4','h'):
95			case MKTAG('a','p','4','x'):
96		406	depth = 12;
97		406	break;
98		✗	default:
99		✗	return buf_size;
100			}
101
102		1060	chroma_format = flags >> 6 & 3;
103	1/2 ✗ Branch 28 → 29 not taken. ✓ Branch 28 → 30 taken 1060 times.	1060	if (chroma_format < 2)
104		✗	return buf_size;
105
106		1060	alpha_channel_type = bytestream2_get_byte(&gb) & 0xf;
107
108	3/9 ✓ Branch 31 → 32 taken 654 times. ✗ Branch 31 → 33 not taken. ✗ Branch 31 → 34 not taken. ✗ Branch 31 → 35 not taken. ✗ Branch 31 → 36 not taken. ✗ Branch 31 → 37 not taken. ✓ Branch 31 → 38 taken 400 times. ✓ Branch 31 → 39 taken 6 times. ✗ Branch 31 → 40 not taken.	1060	switch (depth \| (chroma_format << 4) \| (alpha_channel_type << 8)) {
109		654	case 10 \| (2 << 4) \| (0 << 8): s->format = AV_PIX_FMT_YUV422P10; break;
110		✗	case 10 \| (2 << 4) \| (1 << 8):
111		✗	case 10 \| (2 << 4) \| (2 << 8): s->format = AV_PIX_FMT_YUVA422P10; break;
112		✗	case 10 \| (3 << 4) \| (0 << 8): s->format = AV_PIX_FMT_YUV444P10; break;
113		✗	case 10 \| (3 << 4) \| (1 << 8):
114		✗	case 10 \| (3 << 4) \| (2 << 8): s->format = AV_PIX_FMT_YUVA444P10; break;
115		✗	case 12 \| (2 << 4) \| (0 << 8): s->format = AV_PIX_FMT_YUV422P12; break;
116		✗	case 12 \| (2 << 4) \| (1 << 8):
117		✗	case 12 \| (2 << 4) \| (2 << 8): s->format = AV_PIX_FMT_YUVA422P12; break;
118		400	case 12 \| (3 << 4) \| (0 << 8): s->format = AV_PIX_FMT_YUV444P12; break;
119		6	case 12 \| (3 << 4) \| (1 << 8):
120		6	case 12 \| (3 << 4) \| (2 << 8): s->format = AV_PIX_FMT_YUVA444P12; break;
121			}
122
123		1060	return buf_size;
124			}
125
126			const FFCodecParser ff_prores_parser = {
127			PARSER_CODEC_LIST(AV_CODEC_ID_PRORES),
128			.parse = parse,
129			};
130