FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/oggparsespeex.c
Date: 2022-11-26 13:19:19
Exec Total Coverage
Lines: 0 68 0.0%
Branches: 0 46 0.0%

Line Branch Exec Source
1 /*
2 Copyright (C) 2008 Reimar Döffinger
3
4 Permission is hereby granted, free of charge, to any person
5 obtaining a copy of this software and associated documentation
6 files (the "Software"), to deal in the Software without
7 restriction, including without limitation the rights to use, copy,
8 modify, merge, publish, distribute, sublicense, and/or sell copies
9 of the Software, and to permit persons to whom the Software is
10 furnished to do so, subject to the following conditions:
11
12 The above copyright notice and this permission notice shall be
13 included in all copies or substantial portions of the Software.
14
15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 DEALINGS IN THE SOFTWARE.
23 **/
24
25 #include "libavutil/channel_layout.h"
26 #include "libavutil/intreadwrite.h"
27
28 #include "avformat.h"
29 #include "internal.h"
30 #include "oggdec.h"
31
32 struct speex_params {
33 int packet_size;
34 int final_packet_duration;
35 int seq;
36 };
37
38 static int speex_header(AVFormatContext *s, int idx) {
39 struct ogg *ogg = s->priv_data;
40 struct ogg_stream *os = ogg->streams + idx;
41 struct speex_params *spxp = os->private;
42 AVStream *st = s->streams[idx];
43 uint8_t *p = os->buf + os->pstart;
44 int ret;
45
46 if (!spxp) {
47 spxp = av_mallocz(sizeof(*spxp));
48 if (!spxp)
49 return AVERROR(ENOMEM);
50 os->private = spxp;
51 }
52
53 if (spxp->seq > 1)
54 return 0;
55
56 if (spxp->seq == 0) {
57 int frames_per_packet;
58 int channels;
59 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
60 st->codecpar->codec_id = AV_CODEC_ID_SPEEX;
61
62 if (os->psize < 68) {
63 av_log(s, AV_LOG_ERROR, "speex packet too small\n");
64 return AVERROR_INVALIDDATA;
65 }
66
67 st->codecpar->sample_rate = AV_RL32(p + 36);
68 if (st->codecpar->sample_rate <= 0) {
69 av_log(s, AV_LOG_ERROR, "Invalid sample rate %d\n", st->codecpar->sample_rate);
70 return AVERROR_INVALIDDATA;
71 }
72 channels = AV_RL32(p + 48);
73 if (channels < 1 || channels > 2) {
74 av_log(s, AV_LOG_ERROR, "invalid channel count. Speex must be mono or stereo.\n");
75 return AVERROR_INVALIDDATA;
76 }
77 av_channel_layout_default(&st->codecpar->ch_layout, channels);
78
79 spxp->packet_size = AV_RL32(p + 56);
80 frames_per_packet = AV_RL32(p + 64);
81 if (spxp->packet_size < 0 ||
82 frames_per_packet < 0 ||
83 spxp->packet_size * (int64_t)frames_per_packet > INT32_MAX / 256) {
84 av_log(s, AV_LOG_ERROR, "invalid packet_size, frames_per_packet %d %d\n", spxp->packet_size, frames_per_packet);
85 spxp->packet_size = 0;
86 return AVERROR_INVALIDDATA;
87 }
88 if (frames_per_packet)
89 spxp->packet_size *= frames_per_packet;
90
91 if ((ret = ff_alloc_extradata(st->codecpar, os->psize)) < 0)
92 return ret;
93 memcpy(st->codecpar->extradata, p, st->codecpar->extradata_size);
94
95 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
96 } else
97 ff_vorbis_stream_comment(s, st, p, os->psize);
98
99 spxp->seq++;
100 return 1;
101 }
102
103 static int ogg_page_packets(struct ogg_stream *os)
104 {
105 int i;
106 int packets = 0;
107 for (i = 0; i < os->nsegs; i++)
108 if (os->segments[i] < 255)
109 packets++;
110 return packets;
111 }
112
113 static int speex_packet(AVFormatContext *s, int idx)
114 {
115 struct ogg *ogg = s->priv_data;
116 struct ogg_stream *os = ogg->streams + idx;
117 struct speex_params *spxp = os->private;
118 int packet_size = spxp->packet_size;
119
120 if (os->flags & OGG_FLAG_EOS && os->lastpts != AV_NOPTS_VALUE &&
121 os->granule > 0) {
122 /* first packet of final page. we have to calculate the final packet
123 duration here because it is the only place we know the next-to-last
124 granule position. */
125 spxp->final_packet_duration = os->granule - os->lastpts -
126 packet_size * (ogg_page_packets(os) - 1);
127 }
128
129 if (!os->lastpts && os->granule > 0)
130 /* first packet */
131 os->lastpts = os->lastdts = os->granule - packet_size *
132 ogg_page_packets(os);
133 if (os->flags & OGG_FLAG_EOS && os->segp == os->nsegs &&
134 spxp->final_packet_duration)
135 /* final packet */
136 os->pduration = spxp->final_packet_duration;
137 else
138 os->pduration = packet_size;
139
140 return 0;
141 }
142
143 const struct ogg_codec ff_speex_codec = {
144 .magic = "Speex ",
145 .magicsize = 8,
146 .header = speex_header,
147 .packet = speex_packet,
148 .nb_header = 2,
149 };
150