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 "libavcodec/get_bits.h"
29 #include "libavcodec/bytestream.h"
34 int final_packet_duration;
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;
46 spxp = av_mallocz(sizeof(*spxp));
54 int frames_per_packet;
55 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
56 st->codec->codec_id = CODEC_ID_SPEEX;
58 st->codec->sample_rate = AV_RL32(p + 36);
59 st->codec->channels = AV_RL32(p + 48);
61 /* We treat the whole Speex packet as a single frame everywhere Speex
62 is handled in FFmpeg. This avoids the complexities of splitting
63 and joining individual Speex frames, which are not always
65 st->codec->frame_size = AV_RL32(p + 56);
66 frames_per_packet = AV_RL32(p + 64);
67 if (frames_per_packet)
68 st->codec->frame_size *= frames_per_packet;
70 st->codec->extradata_size = os->psize;
71 st->codec->extradata = av_malloc(st->codec->extradata_size
72 + FF_INPUT_BUFFER_PADDING_SIZE);
73 memcpy(st->codec->extradata, p, st->codec->extradata_size);
75 av_set_pts_info(st, 64, 1, st->codec->sample_rate);
77 ff_vorbis_comment(s, &st->metadata, p, os->psize);
83 static int ogg_page_packets(struct ogg_stream *os)
87 for (i = 0; i < os->nsegs; i++)
88 if (os->segments[i] < 255)
93 static int speex_packet(AVFormatContext *s, int idx)
95 struct ogg *ogg = s->priv_data;
96 struct ogg_stream *os = ogg->streams + idx;
97 struct speex_params *spxp = os->private;
98 int packet_size = s->streams[idx]->codec->frame_size;
100 if (os->flags & OGG_FLAG_EOS && os->lastpts != AV_NOPTS_VALUE &&
102 /* first packet of final page. we have to calculate the final packet
103 duration here because it is the only place we know the next-to-last
105 spxp->final_packet_duration = os->granule - os->lastpts -
106 packet_size * (ogg_page_packets(os) - 1);
109 if (!os->lastpts && os->granule > 0)
111 os->pduration = os->granule - packet_size * (ogg_page_packets(os) - 1);
112 else if (os->flags & OGG_FLAG_EOS && os->segp == os->nsegs &&
113 spxp->final_packet_duration)
115 os->pduration = spxp->final_packet_duration;
117 os->pduration = packet_size;
122 const struct ogg_codec ff_speex_codec = {
125 .header = speex_header,
126 .packet = speex_packet