FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/voc_packet.c
Date: 2025-01-20 09:27:23
Exec Total Coverage
Lines: 67 99 67.7%
Functions: 1 1 100.0%
Branches: 28 45 62.2%
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1 /*
2 * Copyright (c) 2006 Aurelien Jacobs <aurel@gnuage.org>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "libavutil/intreadwrite.h"
22 #include "avformat.h"
23 #include "internal.h"
24 #include "voc.h"
25
26 int
27 271 ff_voc_get_packet(AVFormatContext *s, AVPacket *pkt, AVStream *st, int max_size)
28 {
29 271 VocDecContext *voc = s->priv_data;
30 271 AVCodecParameters *par = st->codecpar;
31 271 AVIOContext *pb = s->pb;
32 VocType type;
33 271 int size, tmp_codec=-1;
34 271 int sample_rate = 0;
35 271 int channels = 1;
36 int64_t duration;
37 int ret;
38
39 271 av_add_index_entry(st,
40 avio_tell(pb),
41 voc->pts,
42 271 voc->remaining_size,
43 0,
44 AVINDEX_KEYFRAME);
45
46
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 331 while (!voc->remaining_size) {
47
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 91 if (max_size < 4)
48 74 max_size = 0;
49 91 type = avio_r8(pb);
50
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 91 if (type == VOC_TYPE_EOF)
51 31 return AVERROR_EOF;
52 60 voc->remaining_size = avio_rl24(pb);
53
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 60 if (!voc->remaining_size) {
54 int64_t filesize;
55 ✗ if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL))
56 ✗ return AVERROR(EIO);
57 ✗ filesize = avio_size(pb);
58 ✗ if (filesize - avio_tell(pb) > INT_MAX)
59 ✗ return AVERROR_INVALIDDATA;
60 ✗ voc->remaining_size = filesize - avio_tell(pb);
61 }
62 60 max_size -= 4;
63
64
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 60 switch (type) {
65 26 case VOC_TYPE_VOICE_DATA:
66
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 26 if (voc->remaining_size < 2) {
67 ✗ voc->remaining_size = 0;
68 ✗ return AVERROR_INVALIDDATA;
69 }
70
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 26 if (!par->sample_rate) {
71 7 par->sample_rate = 1000000 / (256 - avio_r8(pb));
72
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 7 if (sample_rate)
73 ✗ par->sample_rate = sample_rate;
74 7 avpriv_set_pts_info(st, 64, 1, par->sample_rate);
75 7 par->ch_layout.nb_channels = channels;
76 7 par->bits_per_coded_sample = av_get_bits_per_sample(par->codec_id);
77 } else
78 19 avio_skip(pb, 1);
79 26 tmp_codec = avio_r8(pb);
80 26 voc->remaining_size -= 2;
81 26 max_size -= 2;
82 26 channels = 1;
83 26 break;
84
85 33 case VOC_TYPE_VOICE_DATA_CONT:
86 33 break;
87
88 ✗ case VOC_TYPE_EXTENDED:
89 ✗ sample_rate = avio_rl16(pb);
90 ✗ avio_r8(pb);
91 ✗ channels = avio_r8(pb) + 1;
92 ✗ sample_rate = 256000000 / (channels * (65536 - sample_rate));
93 ✗ voc->remaining_size = 0;
94 ✗ max_size -= 4;
95 ✗ break;
96
97 1 case VOC_TYPE_NEW_VOICE_DATA:
98
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 1 if (voc->remaining_size < 12) {
99 ✗ voc->remaining_size = 0;
100 ✗ return AVERROR_INVALIDDATA;
101 }
102
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 1 if (!par->sample_rate) {
103 1 par->sample_rate = avio_rl32(pb);
104 1 avpriv_set_pts_info(st, 64, 1, par->sample_rate);
105 1 par->bits_per_coded_sample = avio_r8(pb);
106 1 channels = avio_r8(pb);
107 1 par->ch_layout.nb_channels = channels;
108 } else
109 ✗ avio_skip(pb, 6);
110 1 tmp_codec = avio_rl16(pb);
111 1 avio_skip(pb, 4);
112 1 voc->remaining_size -= 12;
113 1 max_size -= 12;
114 1 break;
115
116 ✗ default:
117 ✗ avio_skip(pb, voc->remaining_size);
118 ✗ max_size -= voc->remaining_size;
119 ✗ voc->remaining_size = 0;
120 ✗ break;
121 }
122 }
123
124
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 240 if (par->sample_rate <= 0) {
125 ✗ av_log(s, AV_LOG_ERROR, "Invalid sample rate %d\n", par->sample_rate);
126 ✗ return AVERROR_INVALIDDATA;
127 }
128
129
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 240 if (tmp_codec >= 0) {
130 27 tmp_codec = ff_codec_get_id(ff_voc_codec_tags, tmp_codec);
131
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 27 if (par->codec_id == AV_CODEC_ID_NONE)
132 8 par->codec_id = tmp_codec;
133
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 19 else if (par->codec_id != tmp_codec)
134 ✗ av_log(s, AV_LOG_WARNING, "Ignoring mid-stream change in audio codec\n");
135
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 27 if (par->codec_id == AV_CODEC_ID_NONE) {
136 ✗ if (s->audio_codec_id == AV_CODEC_ID_NONE) {
137 ✗ av_log(s, AV_LOG_ERROR, "unknown codec tag\n");
138 ✗ return AVERROR(EINVAL);
139 }
140 ✗ av_log(s, AV_LOG_WARNING, "unknown codec tag\n");
141 }
142 }
143
144 240 par->bit_rate = (int64_t)par->sample_rate * par->ch_layout.nb_channels * par->bits_per_coded_sample;
145
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 240 if (max_size <= 0)
147 198 max_size = 2048;
148 240 size = FFMIN(voc->remaining_size, max_size);
149 240 voc->remaining_size -= size;
150
151 240 ret = av_get_packet(pb, pkt, size);
152 240 pkt->dts = pkt->pts = voc->pts;
153
154 240 duration = av_get_audio_frame_duration2(st->codecpar, size);
155
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 240 if (duration > 0 && voc->pts != AV_NOPTS_VALUE)
156 183 voc->pts += duration;
157 else
158 57 voc->pts = AV_NOPTS_VALUE;
159
160 240 return ret;
161 }
162