diff options
Diffstat (limited to 'contrib/ffmpeg/libavformat/oggparsevorbis.c')
| -rw-r--r-- | contrib/ffmpeg/libavformat/oggparsevorbis.c | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/contrib/ffmpeg/libavformat/oggparsevorbis.c b/contrib/ffmpeg/libavformat/oggparsevorbis.c deleted file mode 100644 index 5de221cb4..000000000 --- a/contrib/ffmpeg/libavformat/oggparsevorbis.c +++ /dev/null @@ -1,205 +0,0 @@ -/** - Copyright (C) 2005 Michael Ahlberg, Måns Rullgård - - Permission is hereby granted, free of charge, to any person - obtaining a copy of this software and associated documentation - files (the "Software"), to deal in the Software without - restriction, including without limitation the rights to use, copy, - modify, merge, publish, distribute, sublicense, and/or sell copies - of the Software, and to permit persons to whom the Software is - furnished to do so, subject to the following conditions: - - The above copyright notice and this permission notice shall be - included in all copies or substantial portions of the Software. - - THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - DEALINGS IN THE SOFTWARE. -**/ - -#include <stdlib.h> -#include "avformat.h" -#include "bitstream.h" -#include "bswap.h" -#include "ogg2.h" - -extern int -vorbis_comment (AVFormatContext * as, uint8_t *buf, int size) -{ - char *p = buf; - int s, n, j; - - if (size < 4) - return -1; - - s = le2me_32 (unaligned32 (p)); - p += 4; - size -= 4; - - if (size < s + 4) - return -1; - - p += s; - size -= s; - - n = le2me_32 (unaligned32 (p)); - p += 4; - size -= 4; - - while (size >= 4){ - char *t, *v; - int tl, vl; - - s = le2me_32 (unaligned32 (p)); - p += 4; - size -= 4; - - if (size < s) - break; - - t = p; - p += s; - size -= s; - n--; - - v = memchr (t, '=', s); - if (!v) - continue; - - tl = v - t; - vl = s - tl - 1; - v++; - - if (tl && vl){ - char tt[tl + 1]; - char ct[vl + 1]; - - for (j = 0; j < tl; j++) - tt[j] = toupper (t[j]); - tt[tl] = 0; - - memcpy (ct, v, vl); - ct[vl] = 0; - - // took from Vorbis_I_spec - if (!strcmp (tt, "AUTHOR")) - strncpy (as->author, ct, FFMIN(sizeof (as->author), vl)); - else if (!strcmp (tt, "TITLE")) - strncpy (as->title, ct, FFMIN(sizeof (as->title), vl)); - else if (!strcmp (tt, "COPYRIGHT")) - strncpy (as->copyright, ct, FFMIN(sizeof (as->copyright), vl)); - else if (!strcmp (tt, "DESCRIPTION")) - strncpy (as->comment, ct, FFMIN(sizeof (as->comment), vl)); - else if (!strcmp (tt, "GENRE")) - strncpy (as->genre, ct, FFMIN(sizeof (as->genre), vl)); - else if (!strcmp (tt, "TRACKNUMBER")) - as->track = atoi (ct); - //Too bored to add others for today - } - } - - if (size > 0) - av_log (as, AV_LOG_INFO, "%i bytes of comment header remain\n", size); - if (n > 0) - av_log (as, AV_LOG_INFO, - "truncated comment header, %i comments not found\n", n); - - return 0; -} - - -/** Parse the vorbis header - * Vorbis Identification header from Vorbis_I_spec.html#vorbis-spec-codec - * [vorbis_version] = read 32 bits as unsigned integer | Not used - * [audio_channels] = read 8 bit integer as unsigned | Used - * [audio_sample_rate] = read 32 bits as unsigned integer | Used - * [bitrate_maximum] = read 32 bits as signed integer | Not used yet - * [bitrate_nominal] = read 32 bits as signed integer | Not used yet - * [bitrate_minimum] = read 32 bits as signed integer | Used as bitrate - * [blocksize_0] = read 4 bits as unsigned integer | Not Used - * [blocksize_1] = read 4 bits as unsigned integer | Not Used - * [framing_flag] = read one bit | Not Used - * */ - -typedef struct { - unsigned int len[3]; - unsigned char *packet[3]; -} oggvorbis_private_t; - - -static unsigned int -fixup_vorbis_headers(AVFormatContext * as, oggvorbis_private_t *priv, - void **buf) -{ - int i,offset, len; - unsigned char *ptr; - - len = priv->len[0] + priv->len[1] + priv->len[2]; - ptr = *buf = av_mallocz(len + len/255 + 64); - - ptr[0] = 2; - offset = 1; - offset += av_xiphlacing(&ptr[offset], priv->len[0]); - offset += av_xiphlacing(&ptr[offset], priv->len[1]); - for(i = 0; i < 3; i++) { - memcpy(&ptr[offset], priv->packet[i], priv->len[i]); - offset += priv->len[i]; - } - *buf = av_realloc(*buf, offset); - return offset; -} - - -static int -vorbis_header (AVFormatContext * s, int idx) -{ - ogg_t *ogg = s->priv_data; - ogg_stream_t *os = ogg->streams + idx; - AVStream *st = s->streams[idx]; - oggvorbis_private_t *priv; - - if (os->seq > 2) - return 0; - - if(os->seq == 0) { - os->private = av_mallocz(sizeof(oggvorbis_private_t)); - if(!os->private) - return 0; - } - - priv = os->private; - priv->len[os->seq] = os->psize; - priv->packet[os->seq] = av_mallocz(os->psize); - memcpy(priv->packet[os->seq], os->buf + os->pstart, os->psize); - if (os->buf[os->pstart] == 1) { - uint8_t *p = os->buf + os->pstart + 11; //skip up to the audio channels - st->codec->channels = *p++; - st->codec->sample_rate = le2me_32 (unaligned32 (p)); - p += 8; //skip maximum and and nominal bitrate - st->codec->bit_rate = le2me_32 (unaligned32 (p)); //Minimum bitrate - - st->codec->codec_type = CODEC_TYPE_AUDIO; - st->codec->codec_id = CODEC_ID_VORBIS; - - st->time_base.num = 1; - st->time_base.den = st->codec->sample_rate; - } else if (os->buf[os->pstart] == 3) { - vorbis_comment (s, os->buf + os->pstart + 7, os->psize - 8); - } else { - st->codec->extradata_size = - fixup_vorbis_headers(s, priv, &st->codec->extradata); - } - - return os->seq < 3; -} - -ogg_codec_t vorbis_codec = { - .magic = "\001vorbis", - .magicsize = 7, - .header = vorbis_header -}; |