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codecs.conf versioning - patch by Joey Parrish <joey@yunamusic.com>

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@6201 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
arpi 2002-05-26 22:39:38 +00:00
parent 2aa7abdc00
commit a62a42f3f1
4 changed files with 41 additions and 3 deletions
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12
DOCS/tech/codecs.conf.txt
View File

@ -33,6 +33,18 @@ care. However, they are organized in a particular order for the benefit of
human readers. For example, all of the open source decoders that MPlayer
implements natively are grouped in one section.
Release Number
--------------
Your codecs.conf now requires a release number to avoid codec release
incompatibilities. The format is simple: (YYYYMMDD)
release 20020520
Whenever changes are made to the codecs that *require* an updated
codecs.conf, then MPlayer will no longer accept outdated versions.
It is not recommended to change this line unless you know exactly
what you are doing.
Video Codecs
------------
Let's jump right in with an example. Here is an example video codec block:

28
codec-cfg.c
View File

@ -368,10 +368,10 @@ static FILE *fp;
static int line_num = 0;
static char *line;
static char *token[MAX_NR_TOKEN];
static int read_nextline = 1;
static int get_token(int min, int max)
{
static int read_nextline = 1;
static int line_pos;
int i;
char c;
@ -466,15 +466,33 @@ int parse_codec_cfg(char *cfgfile)
mp_msg(MSGT_CODECCFG,MSGL_FATAL,"can't get memory for 'line': %s\n", strerror(errno));
return 0;
}
read_nextline = 1;
/*
* check if the cfgfile starts with 'audiocodec' or
* with 'videocodec'
* this only catches release lines at the start of
* codecs.conf, before audiocodecs and videocodecs.
*/
while ((tmp = get_token(1, 1)) == RET_EOL)
/* NOTHING */;
if (tmp == RET_EOF)
goto out;
if (!strcmp(token[0], "release")) {
if (get_token(1, 2) < 0)
goto err_out_parse_error;
tmp = atoi(token[0]);
if (tmp < CODEC_CFG_MIN)
goto err_out_release_num;
while ((tmp = get_token(1, 1)) == RET_EOL)
/* NOTHING */;
if (tmp == RET_EOF)
goto out;
} else
goto err_out_release_num;
/*
* check if the next block starts with 'audiocodec' or
* with 'videocodec'
*/
if (!strcmp(token[0], "audiocodec") || !strcmp(token[0], "videocodec"))
goto loop_enter;
goto err_out_parse_error;
@ -652,11 +670,15 @@ err_out:
free(line);
line=NULL;
line_num = 0;
fclose(fp);
return 0;
err_out_not_valid:
mp_msg(MSGT_CODECCFG,MSGL_ERR,"codec is not defined correctly");
goto err_out_print_linenum;
err_out_release_num:
mp_msg(MSGT_CODECCFG,MSGL_ERR,"this codecs.conf is too old, incompatible with this mplayer release!");
goto err_out_print_linenum;
}
codecs_t *find_audio_codec(unsigned int fourcc, unsigned int *fourccmap,

2
codec-cfg.h
View File

@ -1,6 +1,8 @@
#ifndef __CODEC_CFG_H
#define __CODEC_CFG_H
#define CODEC_CFG_MIN 20020520
#define CODECS_MAX_FOURCC 32
#define CODECS_MAX_OUTFMT 16
#define CODECS_MAX_INFMT 16

2
etc/codecs.conf
View File

@ -3,6 +3,8 @@
; Before editing this file, please read DOCS/tech/codecs.conf.txt !
;=============================================================================
release 20020520
;=============================================================================
; VIDEO CODECS
;=============================================================================