| 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 | #include "libavutil/mem.h" | ||
| 28 | |||
| 29 | #include "avformat.h" | ||
| 30 | #include "internal.h" | ||
| 31 | #include "oggdec.h" | ||
| 32 | |||
| 33 | struct speex_params { | ||
| 34 | int packet_size; | ||
| 35 | int final_packet_duration; | ||
| 36 | int seq; | ||
| 37 | }; | ||
| 38 | |||
| 39 | ✗ | static int speex_header(AVFormatContext *s, int idx) { | |
| 40 | ✗ | struct ogg *ogg = s->priv_data; | |
| 41 | ✗ | struct ogg_stream *os = ogg->streams + idx; | |
| 42 | ✗ | struct speex_params *spxp = os->private; | |
| 43 | ✗ | AVStream *st = s->streams[idx]; | |
| 44 | ✗ | uint8_t *p = os->buf + os->pstart; | |
| 45 | int ret; | ||
| 46 | |||
| 47 | ✗ | if (!spxp) { | |
| 48 | ✗ | spxp = av_mallocz(sizeof(*spxp)); | |
| 49 | ✗ | if (!spxp) | |
| 50 | ✗ | return AVERROR(ENOMEM); | |
| 51 | ✗ | os->private = spxp; | |
| 52 | } | ||
| 53 | |||
| 54 | ✗ | if (spxp->seq > 1) | |
| 55 | ✗ | return 0; | |
| 56 | |||
| 57 | ✗ | if (spxp->seq == 0) { | |
| 58 | int frames_per_packet; | ||
| 59 | int channels; | ||
| 60 | ✗ | st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; | |
| 61 | ✗ | st->codecpar->codec_id = AV_CODEC_ID_SPEEX; | |
| 62 | |||
| 63 | ✗ | if (os->psize < 68) { | |
| 64 | ✗ | av_log(s, AV_LOG_ERROR, "speex packet too small\n"); | |
| 65 | ✗ | return AVERROR_INVALIDDATA; | |
| 66 | } | ||
| 67 | |||
| 68 | ✗ | st->codecpar->sample_rate = AV_RL32(p + 36); | |
| 69 | ✗ | if (st->codecpar->sample_rate <= 0) { | |
| 70 | ✗ | av_log(s, AV_LOG_ERROR, "Invalid sample rate %d\n", st->codecpar->sample_rate); | |
| 71 | ✗ | return AVERROR_INVALIDDATA; | |
| 72 | } | ||
| 73 | ✗ | channels = AV_RL32(p + 48); | |
| 74 | ✗ | if (channels < 1 || channels > 2) { | |
| 75 | ✗ | av_log(s, AV_LOG_ERROR, "invalid channel count. Speex must be mono or stereo.\n"); | |
| 76 | ✗ | return AVERROR_INVALIDDATA; | |
| 77 | } | ||
| 78 | ✗ | av_channel_layout_default(&st->codecpar->ch_layout, channels); | |
| 79 | |||
| 80 | ✗ | spxp->packet_size = AV_RL32(p + 56); | |
| 81 | ✗ | frames_per_packet = AV_RL32(p + 64); | |
| 82 | ✗ | if (spxp->packet_size < 0 || | |
| 83 | ✗ | frames_per_packet < 0 || | |
| 84 | ✗ | spxp->packet_size * (int64_t)frames_per_packet > INT32_MAX / 256) { | |
| 85 | ✗ | av_log(s, AV_LOG_ERROR, "invalid packet_size, frames_per_packet %d %d\n", spxp->packet_size, frames_per_packet); | |
| 86 | ✗ | spxp->packet_size = 0; | |
| 87 | ✗ | return AVERROR_INVALIDDATA; | |
| 88 | } | ||
| 89 | ✗ | if (frames_per_packet) | |
| 90 | ✗ | spxp->packet_size *= frames_per_packet; | |
| 91 | |||
| 92 | ✗ | if ((ret = ff_alloc_extradata(st->codecpar, os->psize)) < 0) | |
| 93 | ✗ | return ret; | |
| 94 | ✗ | memcpy(st->codecpar->extradata, p, st->codecpar->extradata_size); | |
| 95 | |||
| 96 | ✗ | avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate); | |
| 97 | } else | ||
| 98 | ✗ | ff_vorbis_stream_comment(s, st, p, os->psize); | |
| 99 | |||
| 100 | ✗ | spxp->seq++; | |
| 101 | ✗ | return 1; | |
| 102 | } | ||
| 103 | |||
| 104 | ✗ | static int ogg_page_packets(struct ogg_stream *os) | |
| 105 | { | ||
| 106 | int i; | ||
| 107 | ✗ | int packets = 0; | |
| 108 | ✗ | for (i = 0; i < os->nsegs; i++) | |
| 109 | ✗ | if (os->segments[i] < 255) | |
| 110 | ✗ | packets++; | |
| 111 | ✗ | return packets; | |
| 112 | } | ||
| 113 | |||
| 114 | ✗ | static int speex_packet(AVFormatContext *s, int idx) | |
| 115 | { | ||
| 116 | ✗ | struct ogg *ogg = s->priv_data; | |
| 117 | ✗ | struct ogg_stream *os = ogg->streams + idx; | |
| 118 | ✗ | struct speex_params *spxp = os->private; | |
| 119 | ✗ | int packet_size = spxp->packet_size; | |
| 120 | |||
| 121 | ✗ | if (os->flags & OGG_FLAG_EOS && os->lastpts != AV_NOPTS_VALUE && | |
| 122 | ✗ | os->granule > 0) { | |
| 123 | /* first packet of final page. we have to calculate the final packet | ||
| 124 | duration here because it is the only place we know the next-to-last | ||
| 125 | granule position. */ | ||
| 126 | ✗ | spxp->final_packet_duration = os->granule - os->lastpts - | |
| 127 | ✗ | packet_size * (ogg_page_packets(os) - 1); | |
| 128 | } | ||
| 129 | |||
| 130 | ✗ | if (!os->lastpts && os->granule > 0) | |
| 131 | /* first packet */ | ||
| 132 | ✗ | os->lastpts = os->lastdts = os->granule - packet_size * | |
| 133 | ✗ | ogg_page_packets(os); | |
| 134 | ✗ | if (os->flags & OGG_FLAG_EOS && os->segp == os->nsegs && | |
| 135 | ✗ | spxp->final_packet_duration) | |
| 136 | /* final packet */ | ||
| 137 | ✗ | os->pduration = spxp->final_packet_duration; | |
| 138 | else | ||
| 139 | ✗ | os->pduration = packet_size; | |
| 140 | |||
| 141 | ✗ | return 0; | |
| 142 | } | ||
| 143 | |||
| 144 | const struct ogg_codec ff_speex_codec = { | ||
| 145 | .magic = "Speex ", | ||
| 146 | .magicsize = 8, | ||
| 147 | .header = speex_header, | ||
| 148 | .packet = speex_packet, | ||
| 149 | .nb_header = 2, | ||
| 150 | }; | ||
| 151 |