2 Copyright (C) 2008 Reimar Döffinger
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:
12 The above copyright notice and this permission notice shall be
13 included in all copies or substantial portions of the Software.
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.
26 #include "libavutil/bswap.h"
27 #include "libavutil/avstring.h"
28 #include "libavutil/channel_layout.h"
29 #include "libavcodec/get_bits.h"
30 #include "libavcodec/bytestream.h"
37 int final_packet_duration;
41 static int speex_header(AVFormatContext *s, int idx) {
42 struct ogg *ogg = s->priv_data;
43 struct ogg_stream *os = ogg->streams + idx;
44 struct speex_params *spxp = os->private;
45 AVStream *st = s->streams[idx];
46 uint8_t *p = os->buf + os->pstart;
49 spxp = av_mallocz(sizeof(*spxp));
57 int frames_per_packet;
58 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
59 st->codec->codec_id = AV_CODEC_ID_SPEEX;
62 av_log(s, AV_LOG_ERROR, "speex packet too small\n");
63 return AVERROR_INVALIDDATA;
66 st->codec->sample_rate = AV_RL32(p + 36);
67 st->codec->channels = AV_RL32(p + 48);
68 if (st->codec->channels < 1 || st->codec->channels > 2) {
69 av_log(s, AV_LOG_ERROR, "invalid channel count. Speex must be mono or stereo.\n");
70 return AVERROR_INVALIDDATA;
72 st->codec->channel_layout = st->codec->channels == 1 ? AV_CH_LAYOUT_MONO :
75 spxp->packet_size = AV_RL32(p + 56);
76 frames_per_packet = AV_RL32(p + 64);
77 if (frames_per_packet)
78 spxp->packet_size *= frames_per_packet;
80 st->codec->extradata_size = os->psize;
81 st->codec->extradata = av_malloc(st->codec->extradata_size
82 + FF_INPUT_BUFFER_PADDING_SIZE);
83 memcpy(st->codec->extradata, p, st->codec->extradata_size);
85 avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
87 ff_vorbis_comment(s, &st->metadata, p, os->psize);
93 static int ogg_page_packets(struct ogg_stream *os)
97 for (i = 0; i < os->nsegs; i++)
98 if (os->segments[i] < 255)
103 static int speex_packet(AVFormatContext *s, int idx)
105 struct ogg *ogg = s->priv_data;
106 struct ogg_stream *os = ogg->streams + idx;
107 struct speex_params *spxp = os->private;
108 int packet_size = spxp->packet_size;
110 if (os->flags & OGG_FLAG_EOS && os->lastpts != AV_NOPTS_VALUE &&
112 /* first packet of final page. we have to calculate the final packet
113 duration here because it is the only place we know the next-to-last
115 spxp->final_packet_duration = os->granule - os->lastpts -
116 packet_size * (ogg_page_packets(os) - 1);
119 if (!os->lastpts && os->granule > 0)
121 os->lastpts = os->lastdts = os->granule - packet_size *
122 ogg_page_packets(os);
123 if (os->flags & OGG_FLAG_EOS && os->segp == os->nsegs &&
124 spxp->final_packet_duration)
126 os->pduration = spxp->final_packet_duration;
128 os->pduration = packet_size;
133 const struct ogg_codec ff_speex_codec = {
136 .header = speex_header,
137 .packet = speex_packet,