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oggparsevorbis: K&R formatting cosmetics 

Signed-off-by: Diego Biurrun <diego@biurrun.de>
This commit is contained in:
Vittorio Giovara 2013-10-02 16:26:38 +02:00 committed by Diego Biurrun
parent 47b6cfc2a0
commit 49fe9c05f9
1 changed files with 82 additions and 78 deletions
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160
libavformat/oggparsevorbis.c
View File

@ -1,33 +1,34 @@
/**
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.
**/
/*
* 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 "libavutil/avstring.h"
#include "libavutil/bswap.h"
#include "libavutil/dict.h"
#include "libavcodec/get_bits.h"
#include "libavcodec/bytestream.h"
#include "libavcodec/get_bits.h"
#include "libavcodec/vorbis_parser.h"
#include "avformat.h"
#include "internal.h"
@ -46,12 +47,12 @@ static int ogm_chapter(AVFormatContext *as, uint8_t *key, uint8_t *val)
if (sscanf(val, "%02d:%02d:%02d.%03d", &h, &m, &s, &ms) < 4)
return 0;
avpriv_new_chapter(as, cnum, (AVRational){1,1000},
ms + 1000*(s + 60*(m + 60*h)),
AV_NOPTS_VALUE, NULL);
avpriv_new_chapter(as, cnum, (AVRational) { 1, 1000 },
ms + 1000 * (s + 60 * (m + 60 * h)),
AV_NOPTS_VALUE, NULL);
av_free(val);
} else if (!strcmp(key+9, "NAME")) {
for(i = 0; i < as->nb_chapters; i++)
} else if (!strcmp(key + 9, "NAME")) {
for (i = 0; i < as->nb_chapters; i++)
if (as->chapters[i]->id == cnum) {
chapter = as->chapters[i];
break;
@ -59,8 +60,7 @@ static int ogm_chapter(AVFormatContext *as, uint8_t *key, uint8_t *val)
if (!chapter)
return 0;
av_dict_set(&chapter->metadata, "title", val,
AV_DICT_DONT_STRDUP_VAL);
av_dict_set(&chapter->metadata, "title", val, AV_DICT_DONT_STRDUP_VAL);
} else
return 0;
@ -68,15 +68,16 @@ static int ogm_chapter(AVFormatContext *as, uint8_t *key, uint8_t *val)
return 1;
}
int
ff_vorbis_comment(AVFormatContext * as, AVDictionary **m, const uint8_t *buf, int size)
int ff_vorbis_comment(AVFormatContext *as, AVDictionary **m,
const uint8_t *buf, int size)
{
const uint8_t *p = buf;
const uint8_t *p = buf;
const uint8_t *end = buf + size;
unsigned n, j;
int s;
if (size < 8) /* must have vendor_length and user_comment_list_length */
/* must have vendor_length and user_comment_list_length */
if (size < 8)
return -1;
s = bytestream_get_le32(&p);
@ -97,7 +98,7 @@ ff_vorbis_comment(AVFormatContext * as, AVDictionary **m, const uint8_t *buf, in
if (end - p < s || s < 0)
break;
t = p;
t = p;
p += s;
n--;
@ -117,7 +118,8 @@ ff_vorbis_comment(AVFormatContext * as, AVDictionary **m, const uint8_t *buf, in
if (!tt || !ct) {
av_freep(&tt);
av_freep(&ct);
av_log(as, AV_LOG_WARNING, "out-of-memory error. skipping VorbisComment tag.\n");
av_log(as, AV_LOG_WARNING,
"out-of-memory error. skipping VorbisComment tag.\n");
continue;
}
@ -130,13 +132,14 @@ ff_vorbis_comment(AVFormatContext * as, AVDictionary **m, const uint8_t *buf, in
if (!ogm_chapter(as, tt, ct))
av_dict_set(m, tt, ct,
AV_DICT_DONT_STRDUP_KEY |
AV_DICT_DONT_STRDUP_VAL);
AV_DICT_DONT_STRDUP_KEY |
AV_DICT_DONT_STRDUP_VAL);
}
}
if (p != end)
av_log(as, AV_LOG_INFO, "%ti bytes of comment header remain\n", end-p);
av_log(as, AV_LOG_INFO,
"%ti bytes of comment header remain\n", end - p);
if (n > 0)
av_log(as, AV_LOG_INFO,
"truncated comment header, %i comments not found\n", n);
@ -146,8 +149,9 @@ ff_vorbis_comment(AVFormatContext * as, AVDictionary **m, const uint8_t *buf, in
return 0;
}
/** Parse the vorbis header
/*
* 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
@ -158,7 +162,7 @@ ff_vorbis_comment(AVFormatContext * as, AVDictionary **m, const uint8_t *buf, in
* [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
* */
*/
struct oggvorbis_private {
unsigned int len[3];
@ -168,19 +172,18 @@ struct oggvorbis_private {
int final_duration;
};
static unsigned int
fixup_vorbis_headers(AVFormatContext * as, struct oggvorbis_private *priv,
uint8_t **buf)
static unsigned int fixup_vorbis_headers(AVFormatContext *as,
struct oggvorbis_private *priv,
uint8_t **buf)
{
int i, offset, len, err;
unsigned char *ptr;
len = priv->len[0] + priv->len[1] + priv->len[2];
ptr = *buf = av_mallocz(len + len/255 + 64);
ptr = *buf = av_mallocz(len + len / 255 + 64);
ptr[0] = 2;
offset = 1;
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++) {
@ -204,12 +207,11 @@ static void vorbis_cleanup(AVFormatContext *s, int idx)
av_freep(&priv->packet[i]);
}
static int
vorbis_header (AVFormatContext * s, int idx)
static int vorbis_header(AVFormatContext *s, int idx)
{
struct ogg *ogg = s->priv_data;
AVStream *st = s->streams[idx];
struct ogg_stream *os = ogg->streams + idx;
AVStream *st = s->streams[idx];
struct oggvorbis_private *priv;
int pkt_type = os->buf[os->pstart];
@ -227,12 +229,12 @@ vorbis_header (AVFormatContext * s, int idx)
priv = os->private;
if (priv->packet[pkt_type>>1])
if (priv->packet[pkt_type >> 1])
return -1;
if (pkt_type > 1 && !priv->packet[0] || pkt_type > 3 && !priv->packet[1])
return -1;
priv->len[pkt_type >> 1] = os->psize;
priv->len[pkt_type >> 1] = os->psize;
priv->packet[pkt_type >> 1] = av_mallocz(os->psize);
memcpy(priv->packet[pkt_type >> 1], os->buf + os->pstart, os->psize);
if (os->buf[os->pstart] == 1) {
@ -247,14 +249,14 @@ vorbis_header (AVFormatContext * s, int idx)
return -1;
st->codec->channels = bytestream_get_byte(&p);
srate = bytestream_get_le32(&p);
srate = bytestream_get_le32(&p);
p += 4; // skip maximum bitrate
st->codec->bit_rate = bytestream_get_le32(&p); // nominal bitrate
p += 4; // skip minimum bitrate
blocksize = bytestream_get_byte(&p);
bs0 = blocksize & 15;
bs1 = blocksize >> 4;
bs0 = blocksize & 15;
bs1 = blocksize >> 4;
if (bs0 > bs1)
return -1;
@ -265,7 +267,7 @@ vorbis_header (AVFormatContext * s, int idx)
return -1;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = AV_CODEC_ID_VORBIS;
st->codec->codec_id = AV_CODEC_ID_VORBIS;
if (srate > 0) {
st->codec->sample_rate = srate;
@ -273,13 +275,14 @@ vorbis_header (AVFormatContext * s, int idx)
}
} else if (os->buf[os->pstart] == 3) {
if (os->psize > 8 &&
ff_vorbis_comment(s, &st->metadata, os->buf + os->pstart + 7, os->psize - 8) >= 0) {
ff_vorbis_comment(s, &st->metadata, os->buf + os->pstart + 7,
os->psize - 8) >= 0) {
// drop all metadata we parsed and which is not required by libvorbis
unsigned new_len = 7 + 4 + AV_RL32(priv->packet[1] + 7) + 4 + 1;
if (new_len >= 16 && new_len < os->psize) {
AV_WL32(priv->packet[1] + new_len - 5, 0);
priv->packet[1][new_len - 1] = 1;
priv->len[1] = new_len;
priv->len[1] = new_len;
}
}
} else {
@ -307,13 +310,13 @@ static int vorbis_packet(AVFormatContext *s, int idx)
int duration;
/* first packet handling
here we parse the duration of each packet in the first page and compare
the total duration to the page granule to find the encoder delay and
set the first timestamp */
* here we parse the duration of each packet in the first page and compare
* the total duration to the page granule to find the encoder delay and
* set the first timestamp */
if (!os->lastpts) {
int seg;
uint8_t *last_pkt = os->buf + os->pstart;
uint8_t *next_pkt = last_pkt;
uint8_t *last_pkt = os->buf + os->pstart;
uint8_t *next_pkt = last_pkt;
int first_duration = 0;
avpriv_vorbis_parse_reset(&priv->vp);
@ -328,16 +331,17 @@ static int vorbis_packet(AVFormatContext *s, int idx)
if (!duration)
first_duration = d;
duration += d;
last_pkt = next_pkt + os->segments[seg];
last_pkt = next_pkt + os->segments[seg];
}
next_pkt += os->segments[seg];
}
os->lastpts = os->lastdts = os->granule - duration;
os->lastpts =
os->lastdts = os->granule - duration;
s->streams[idx]->start_time = os->lastpts + first_duration;
if (s->streams[idx]->duration)
s->streams[idx]->duration -= s->streams[idx]->start_time;
s->streams[idx]->cur_dts = AV_NOPTS_VALUE;
priv->final_pts = AV_NOPTS_VALUE;
s->streams[idx]->cur_dts = AV_NOPTS_VALUE;
priv->final_pts = AV_NOPTS_VALUE;
avpriv_vorbis_parse_reset(&priv->vp);
}
@ -352,12 +356,12 @@ static int vorbis_packet(AVFormatContext *s, int idx)
}
/* final packet handling
here we save the pts of the first packet in the final page, sum up all
packet durations in the final page except for the last one, and compare
to the page granule to find the duration of the final packet */
* here we save the pts of the first packet in the final page, sum up all
* packet durations in the final page except for the last one, and compare
* to the page granule to find the duration of the final packet */
if (os->flags & OGG_FLAG_EOS) {
if (os->lastpts != AV_NOPTS_VALUE) {
priv->final_pts = os->lastpts;
priv->final_pts = os->lastpts;
priv->final_duration = 0;
}
if (os->segp == os->nsegs)
@ -369,10 +373,10 @@ static int vorbis_packet(AVFormatContext *s, int idx)
}
const struct ogg_codec ff_vorbis_codec = {
.magic = "\001vorbis",
.magic = "\001vorbis",
.magicsize = 7,
.header = vorbis_header,
.packet = vorbis_packet,
.cleanup= vorbis_cleanup,
.header = vorbis_header,
.packet = vorbis_packet,
.cleanup = vorbis_cleanup,
.nb_header = 3,
};