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mpv/codec-cfg.c

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/*
* codec.conf parser
* by Szabolcs Berecz <szabi@inf.elte.hu>
* (C) 2001
*/
#define DEBUG
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <ctype.h>
#include <assert.h>
#include <string.h>
#include "libvo/img_format.h"
#include "codec-cfg.h"
#define PRINT_LINENUM printf(" at line %d\n", line_num)
#define MAX_NR_TOKEN 16
#define MAX_LINE_LEN 1000
#define RET_EOF -1
#define RET_EOL -2
#define TYPE_VIDEO 0
#define TYPE_AUDIO 1
static int add_to_fourcc(char *s, char *alias, unsigned int *fourcc,
unsigned int *map)
{
int i, j, freeslots;
char **aliasp;
unsigned int tmp;
/* find first unused slot */
for (i = 0; i < CODECS_MAX_FOURCC && fourcc[i] != 0xffffffff; i++)
/* NOTHING */;
freeslots = CODECS_MAX_FOURCC - i;
if (!freeslots)
goto err_out_too_many;
aliasp = (alias) ? &alias : &s;
do {
tmp = *((unsigned int *) s);
for (j = 0; j < i; j++)
if (tmp == fourcc[j])
goto err_out_duplicated;
fourcc[i] = tmp;
map[i] = *((unsigned int *) (*aliasp));
s += 4;
i++;
} while ((*(s++) == ',') && --freeslots);
if (!freeslots)
goto err_out_too_many;
if (*(--s) != '\0')
goto err_out_parse_error;
return 1;
err_out_duplicated:
printf("duplicated fourcc/format");
return 0;
err_out_too_many:
printf("too many fourcc/format...");
return 0;
err_out_parse_error:
printf("parse error");
return 0;
}
static int add_to_format(char *s, unsigned int *fourcc, unsigned int *fourccmap)
{
int i, j;
char *endptr;
/* find first unused slot */
for (i = 0; i < CODECS_MAX_FOURCC && fourcc[i] != 0xffffffff; i++)
/* NOTHING */;
if (i == CODECS_MAX_FOURCC) {
printf("too many fourcc/format...");
return 0;
}
fourcc[i]=fourccmap[i]=strtoul(s,&endptr,0);
if (*endptr != '\0') {
printf("parse error");
return 0;
}
for (j = 0; j < i; j++)
if (fourcc[j] == fourcc[i]) {
printf("duplicated fourcc/format");
return 0;
}
return 1;
}
static struct {
const char *name;
const unsigned int num;
} fmt_table[] = {
{"YV12", IMGFMT_YV12},
{"I420", IMGFMT_I420},
{"IYUV", IMGFMT_IYUV},
{"YUY2", IMGFMT_YUY2},
{"UYVY", IMGFMT_UYVY},
{"YVYU", IMGFMT_YVYU},
{"RGB8", IMGFMT_RGB|8},
{"RGB15", IMGFMT_RGB|15},
{"RGB16", IMGFMT_RGB|16},
{"RGB24", IMGFMT_RGB|24},
{"RGB32", IMGFMT_RGB|32},
{"BGR8", IMGFMT_BGR|8},
{"BGR15", IMGFMT_BGR|15},
{"BGR16", IMGFMT_BGR|16},
{"BGR24", IMGFMT_BGR|24},
{"BGR32", IMGFMT_BGR|32},
{NULL, 0}
};
static int add_to_out(char *sfmt, char *sflags, unsigned int *outfmt,
unsigned char *outflags)
{
static char *flagstr[] = {
"flip",
"noflip",
"yuvhack",
NULL
};
int i, j, freeslots;
unsigned char flags;
for (i = 0; i < CODECS_MAX_OUTFMT && outfmt[i] != 0xffffffff; i++)
/* NOTHING */;
freeslots = CODECS_MAX_OUTFMT - i;
if (!freeslots)
goto err_out_too_many;
flags = 0;
if(sflags) {
do {
for (j = 0; flagstr[j] != NULL; j++)
if (!strncmp(sflags, flagstr[j],
strlen(flagstr[j])))
break;
if (flagstr[j] == NULL)
goto err_out_parse_error;
flags|=(1<<j);
sflags+=strlen(flagstr[j]);
} while (*(sflags++) == ',');
if (*(--sflags) != '\0')
goto err_out_parse_error;
}
do {
for (j = 0; fmt_table[j].name != NULL; j++)
if (!strncmp(sfmt, fmt_table[j].name, strlen(fmt_table[j].name)))
break;
if (fmt_table[j].name == NULL)
goto err_out_parse_error;
outfmt[i] = fmt_table[j].num;
outflags[i] = flags;
++i;
sfmt+=strlen(fmt_table[j].name);
} while ((*(sfmt++) == ',') && --freeslots);
if (!freeslots)
goto err_out_too_many;
if (*(--sfmt) != '\0')
goto err_out_parse_error;
return 1;
err_out_too_many:
printf("too many out...");
return 0;
err_out_parse_error:
printf("parse error");
return 0;
}
static short get_driver(char *s,int audioflag)
{
static char *audiodrv[] = {
"null",
"mp3lib",
"pcm",
"libac3",
"acm",
"alaw",
"msgsm",
"dshow",
"dvdpcm",
NULL
};
static char *videodrv[] = {
"null",
"libmpeg2",
"vfw",
"odivx",
"dshow",
"ffmpeg",
"vfwex",
NULL
};
char **drv=audioflag?audiodrv:videodrv;
int i;
for(i=0;drv[i];i++) if(!strcmp(s,drv[i])) return i;
return -1;
}
static int validate_codec(codecs_t *c, int type)
{
#if 0
int i;
for (i = 0; i < strlen(c->name) && isalnum(c->name[i]); i++)
/* NOTHING */;
if (i < strlen(c->name)) {
printf("\ncodec(%s)->name is not valid!\n", c->name);
return 0;
}
#warning codec->info = codec->name; ez ok, vagy strdup()?
if (!c->info)
c->info = c->name;
if (c->fourcc[0] == 0xffffffff) {
printf("\ncodec(%s) does not have fourcc/format!\n", c->name);
return 0;
}
if (!c->driver) {
printf("\ncodec(%s) does not have a driver!\n", c->name);
return 0;
}
#warning codec->driver == 4;... <- ezt nem kellene belehegeszteni...
#warning HOL VANNAK DEFINIALVA????????????
if (!c->dll && (c->driver == 4 ||
(c->driver == 2 && type == TYPE_VIDEO))) {
printf("\ncodec(%s) needs a 'dll'!\n", c->name);
return 0;
}
#warning guid.f1 lehet 0? honnan lehet tudni, hogy nem adtak meg?
// if (!(codec->flags & CODECS_FLAG_AUDIO) && codec->driver == 4)
if (type == TYPE_VIDEO)
if (c->outfmt[0] == 0xffffffff) {
printf("\ncodec(%s) needs an 'outfmt'!\n", c->name);
return 0;
}
#endif
return 1;
}
static int add_comment(char *s, char **d)
{
int pos;
if (!*d)
pos = 0;
else {
pos = strlen(*d);
(*d)[pos++] = '\n';
}
if (!(*d = (char *) realloc(*d, pos + strlen(s) + 1))) {
printf("can't allocate mem for comment. ");
return 0;
}
strcpy(*d + pos, s);
return 1;
}
static short get_cpuflags(char *s)
{
static char *flagstr[] = {
"mmx",
"sse",
"3dnow",
NULL
};
int i;
short flags = 0;
do {
for (i = 0; flagstr[i]; i++)
if (!strncmp(s, flagstr[i], strlen(flagstr[i])))
break;
if (!flagstr[i])
goto err_out_parse_error;
flags |= 1<<i;
s += strlen(flagstr[i]);
} while (*(s++) == ',');
if (*(--s) != '\0')
goto err_out_parse_error;
return flags;
err_out_parse_error:
return 0;
}
static FILE *fp;
static int line_num = 0;
static char *line;
static char *token[MAX_NR_TOKEN];
static int get_token(int min, int max)
{
static int read_nextline = 1;
static int line_pos;
int i;
char c;
if (max >= MAX_NR_TOKEN) {
printf("get_token(): max >= MAX_NR_TOKEN!");
goto out_eof;
}
memset(token, 0x00, sizeof(*token) * max);
if (read_nextline) {
if (!fgets(line, MAX_LINE_LEN, fp))
goto out_eof;
line_pos = 0;
++line_num;
read_nextline = 0;
}
for (i = 0; i < max; i++) {
while (isspace(line[line_pos]))
++line_pos;
if (line[line_pos] == '\0' || line[line_pos] == '#' ||
line[line_pos] == ';') {
read_nextline = 1;
if (i >= min)
goto out_ok;
goto out_eol;
}
token[i] = line + line_pos;
c = line[line_pos];
if (c == '"' || c == '\'') {
token[i]++;
while (line[++line_pos] != c && line[line_pos])
/* NOTHING */;
} else {
for (/* NOTHING */; !isspace(line[line_pos]) &&
line[line_pos]; line_pos++)
/* NOTHING */;
}
if (!line[line_pos]) {
read_nextline = 1;
if (i >= min - 1)
goto out_ok;
goto out_eol;
}
line[line_pos] = '\0';
line_pos++;
}
out_ok:
return i;
out_eof:
return RET_EOF;
out_eol:
return RET_EOL;
}
static codecs_t *video_codecs=NULL;
static codecs_t *audio_codecs=NULL;
static int nr_vcodecs = 0;
static int nr_acodecs = 0;
codecs_t **parse_codec_cfg(char *cfgfile)
{
codecs_t *codec = NULL; // current codec
codecs_t **codecsp = NULL;// points to audio_codecs or to video_codecs
static codecs_t *ret_codecs[2] = {NULL,NULL};
char *endptr; // strtoul()...
int *nr_codecsp;
int codec_type; /* TYPE_VIDEO/TYPE_AUDIO */
int tmp, i;
#ifdef DEBUG
assert(cfgfile != NULL);
#endif
printf("Reading %s: ", cfgfile);
if ((fp = fopen(cfgfile, "r")) == NULL) {
printf("can't open '%s': %s\n", cfgfile, strerror(errno));
return NULL;
}
if ((line = (char *) malloc(MAX_LINE_LEN + 1)) == NULL) {
printf("can't get memory for 'line': %s\n", strerror(errno));
return NULL;
}
/*
* check if the cfgfile starts with 'audiocodec' or
* with 'videocodec'
*/
while ((tmp = get_token(1, 1)) == RET_EOL)
/* NOTHING */;
if (tmp == RET_EOF)
goto out;
if (!strcmp(token[0], "audiocodec") || !strcmp(token[0], "videocodec"))
goto loop_enter;
goto err_out_parse_error;
while ((tmp = get_token(1, 1)) != RET_EOF) {
if (tmp == RET_EOL)
continue;
if (!strcmp(token[0], "audiocodec") ||
!strcmp(token[0], "videocodec")) {
if (!validate_codec(codec, codec_type))
goto err_out_not_valid;
loop_enter:
if (*token[0] == 'v') {
codec_type = TYPE_VIDEO;
nr_codecsp = &nr_vcodecs;
codecsp = &video_codecs;
} else if (*token[0] == 'a') {
codec_type = TYPE_AUDIO;
nr_codecsp = &nr_acodecs;
codecsp = &audio_codecs;
#ifdef DEBUG
} else {
printf("picsba\n");
goto err_out;
#endif
}
if (!(*codecsp = (codecs_t *) realloc(*codecsp,
sizeof(codecs_t) * (*nr_codecsp + 2)))) {
printf("can't realloc '*codecsp': %s\n", strerror(errno));
goto err_out;
}
codec=*codecsp + *nr_codecsp;
++*nr_codecsp;
memset(codec,0,sizeof(codecs_t));
memset(codec->fourcc, 0xff, sizeof(codec->fourcc));
memset(codec->outfmt, 0xff, sizeof(codec->outfmt));
if (get_token(1, 1) < 0)
goto err_out_parse_error;
for (i = 0; i < *nr_codecsp - 1; i++) {
if (!strcmp(token[0], (*codecsp)[i].name)) {
printf("codec name '%s' isn't unique", token[0]);
goto err_out_print_linenum;
}
}
if (!(codec->name = strdup(token[0]))) {
printf("can't strdup -> 'name': %s\n", strerror(errno));
goto err_out;
}
} else if (!strcmp(token[0], "info")) {
if (codec->info || get_token(1, 1) < 0)
goto err_out_parse_error;
if (!(codec->info = strdup(token[0]))) {
printf("can't strdup -> 'info': %s\n", strerror(errno));
goto err_out;
}
} else if (!strcmp(token[0], "comment")) {
if (get_token(1, 1) < 0)
goto err_out_parse_error;
add_comment(token[0], &codec->comment);
} else if (!strcmp(token[0], "fourcc")) {
if (get_token(1, 2) < 0)
goto err_out_parse_error;
if (!add_to_fourcc(token[0], token[1],
codec->fourcc,
codec->fourccmap))
goto err_out_print_linenum;
} else if (!strcmp(token[0], "format")) {
if (get_token(1, 1) < 0)
goto err_out_parse_error;
if (!add_to_format(token[0], codec->fourcc,codec->fourccmap))
goto err_out_print_linenum;
} else if (!strcmp(token[0], "driver")) {
if (get_token(1, 1) < 0)
goto err_out_parse_error;
if ((codec->driver = get_driver(token[0],codec_type))<0)
goto err_out_parse_error;
} else if (!strcmp(token[0], "dll")) {
if (get_token(1, 1) < 0)
goto err_out_parse_error;
if (!(codec->dll = strdup(token[0]))) {
printf("can't strdup -> 'dll': %s\n", strerror(errno));
goto err_out;
}
} else if (!strcmp(token[0], "guid")) {
if (get_token(11, 11) < 0)
goto err_out_parse_error;
codec->guid.f1=strtoul(token[0],&endptr,0);
if ((*endptr != ',' || *(endptr + 1) != '\0') &&
*endptr != '\0')
goto err_out_parse_error;
codec->guid.f2=strtoul(token[1],&endptr,0);
if ((*endptr != ',' || *(endptr + 1) != '\0') &&
*endptr != '\0')
goto err_out_parse_error;
codec->guid.f3=strtoul(token[2],&endptr,0);
if ((*endptr != ',' || *(endptr + 1) != '\0') &&
*endptr != '\0')
goto err_out_parse_error;
for (i = 0; i < 8; i++) {
codec->guid.f4[i]=strtoul(token[i + 3],&endptr,0);
if ((*endptr != ',' || *(endptr + 1) != '\0') &&
*endptr != '\0')
goto err_out_parse_error;
}
} else if (!strcmp(token[0], "out")) {
if (get_token(1, 2) < 0)
goto err_out_parse_error;
if (!add_to_out(token[0], token[1], codec->outfmt,
codec->outflags))
goto err_out_print_linenum;
} else if (!strcmp(token[0], "flags")) {
if (get_token(1, 1) < 0)
goto err_out_parse_error;
if (!strcmp(token[0], "seekable"))
codec->flags |= CODECS_FLAG_SEEKABLE;
else
goto err_out_parse_error;
} else if (!strcmp(token[0], "status")) {
if (get_token(1, 1) < 0)
goto err_out_parse_error;
if (!strcasecmp(token[0], "working"))
codec->status = CODECS_STATUS_WORKING;
else if (!strcasecmp(token[0], "crashing"))
codec->status = CODECS_STATUS_NOT_WORKING;
else if (!strcasecmp(token[0], "untested"))
codec->status = CODECS_STATUS_UNTESTED;
else if (!strcasecmp(token[0], "buggy"))
codec->status = CODECS_STATUS_PROBLEMS;
else
goto err_out_parse_error;
} else if (!strcmp(token[0], "cpuflags")) {
if (get_token(1, 1) < 0)
goto err_out_parse_error;
if (!(codec->cpuflags = get_cpuflags(token[0])))
goto err_out_parse_error;
} else
goto err_out_parse_error;
}
if (!validate_codec(codec, codec_type))
goto err_out_not_valid;
printf("%d audio & %d video codecs\n", nr_acodecs, nr_vcodecs);
if(video_codecs) video_codecs[nr_vcodecs].name = NULL;
if(audio_codecs) audio_codecs[nr_acodecs].name = NULL;
ret_codecs[0] = video_codecs;
ret_codecs[1] = audio_codecs;
out:
free(line);
fclose(fp);
return ret_codecs;
err_out_parse_error:
printf("parse error");
err_out_print_linenum:
PRINT_LINENUM;
err_out:
if (audio_codecs)
free(audio_codecs);
if (video_codecs)
free(video_codecs);
free(line);
free(fp);
return NULL;
err_out_not_valid:
printf("codec is not definied correctly");
goto err_out_print_linenum;
}
codecs_t *find_audio_codec(unsigned int fourcc, unsigned int *fourccmap,
codecs_t *start)
{
return find_codec(fourcc, fourccmap, start, 1);
}
codecs_t *find_video_codec(unsigned int fourcc, unsigned int *fourccmap,
codecs_t *start)
{
return find_codec(fourcc, fourccmap, start, 0);
}
codecs_t* find_codec(unsigned int fourcc,unsigned int *fourccmap,
codecs_t *start, int audioflag)
{
int i, j;
codecs_t *c;
#if 0
if (start) {
for (/* NOTHING */; start->name; start++) {
for (j = 0; j < CODECS_MAX_FOURCC; j++) {
if (start->fourcc[j] == fourcc) {
if (fourccmap)
*fourccmap = start->fourccmap[j];
return start;
}
}
}
} else
#endif
{
if (audioflag) {
i = nr_acodecs;
c = audio_codecs;
} else {
i = nr_vcodecs;
c = video_codecs;
}
if(!i) return NULL;
for (/* NOTHING */; i--; c++) {
if(start && c<=start) continue;
for (j = 0; j < CODECS_MAX_FOURCC; j++) {
if (c->fourcc[j] == fourcc) {
if (fourccmap)
*fourccmap = c->fourccmap[j];
return c;
}
}
}
}
return NULL;
}
#ifdef CODECS2HTML
void wrapline(FILE *f2,char *s){
int c;
if(!s){
fprintf(f2,"-");
return;
}
while((c=*s++)){
if(c==',') fprintf(f2,"<br>"); else fputc(c,f2);
}
}
void parsehtml(FILE *f1,FILE *f2,codecs_t *codec,int section,int dshow){
int c,d;
while((c=fgetc(f1))>=0){
if(c!='%'){
fputc(c,f2);
continue;
}
d=fgetc(f1);
switch(d){
case '.':
return; // end of section
case 'n':
wrapline(f2,codec->name); break;
case 'i':
wrapline(f2,codec->info); break;
case 'c':
wrapline(f2,codec->comment); break;
case 'd':
wrapline(f2,codec->dll); break;
case 'D':
fprintf(f2,"%c",codec->driver==dshow?'+':'-'); break;
case 'F':
for(d=0;d<CODECS_MAX_FOURCC;d++)
if(codec->fourcc[d]!=0xFFFFFFFF)
fprintf(f2,"%s%.4s",d?"<br>":"",codec->fourcc[d]<0x20202020?"-":(char*) &codec->fourcc[d]);
break;
case 'f':
for(d=0;d<CODECS_MAX_FOURCC;d++)
if(codec->fourcc[d]!=0xFFFFFFFF)
fprintf(f2,"%s0x%X",d?"<br>":"",codec->fourcc[d]);
break;
case 'Y':
for(d=0;d<CODECS_MAX_OUTFMT;d++)
if(codec->outfmt[d]!=0xFFFFFFFF){
for (c=0; fmt_table[c].name; c++)
if(fmt_table[c].num==codec->outfmt[d]) break;
if(fmt_table[c].name)
fprintf(f2,"%s%s",d?"<br>":"",fmt_table[c].name);
}
break;
default:
fputc(c,f2);
fputc(d,f2);
}
}
}
void skiphtml(FILE *f1){
int c,d;
while((c=fgetc(f1))>=0){
if(c!='%'){
continue;
}
d=fgetc(f1);
if(d=='.') return; // end of section
}
}
int main(void)
{
codecs_t **codecs, *cl;
FILE *f1;
FILE *f2;
int c,d,i;
int pos;
int section=-1;
int nr_codecs;
int win32=-1;
int dshow=-1;
if (!(codecs = parse_codec_cfg("DOCS/codecs.conf")))
return 0;
if (!codecs[0])
printf("no videoconfig.\n");
if (!codecs[1])
printf("no audioconfig.\n");
f1=fopen("DOCS/codecs-in.html","rb"); if(!f1) exit(1);
f2=fopen("DOCS/codecs.html","wb"); if(!f2) exit(1);
while((c=fgetc(f1))>=0){
if(c!='%'){
fputc(c,f2);
continue;
}
d=fgetc(f1);
if(d>='0' && d<='9'){
// begin section
section=d-'0';
printf("BEGIN %d\n",section);
if(section>=5){
// audio
cl = codecs[1];
nr_codecs = nr_acodecs;
dshow=7;win32=4;
} else {
// video
cl = codecs[0];
nr_codecs = nr_vcodecs;
dshow=4;win32=2;
}
pos=ftell(f1);
for(i=0;i<nr_codecs;i++){
fseek(f1,pos,SEEK_SET);
switch(section){
case 0:
case 5:
if(cl[i].status==CODECS_STATUS_WORKING)
if(!(cl[i].driver==win32 || cl[i].driver==dshow))
parsehtml(f1,f2,&cl[i],section,dshow);
break;
case 1:
case 6:
if(cl[i].status==CODECS_STATUS_WORKING)
if(cl[i].driver==win32 || cl[i].driver==dshow)
parsehtml(f1,f2,&cl[i],section,dshow);
break;
case 2:
case 7:
if(cl[i].status==CODECS_STATUS_PROBLEMS)
parsehtml(f1,f2,&cl[i],section,dshow);
break;
case 3:
case 8:
if(cl[i].status==CODECS_STATUS_NOT_WORKING)
parsehtml(f1,f2,&cl[i],section,dshow);
break;
case 4:
case 9:
if(cl[i].status==CODECS_STATUS_UNTESTED)
parsehtml(f1,f2,&cl[i],section,dshow);
break;
default:
printf("Warning! unimplemented section: %d\n",section);
}
}
fseek(f1,pos,SEEK_SET);
skiphtml(f1);
//void parsehtml(FILE *f1,FILE *f2,codecs_t *codec,int section,int dshow){
continue;
}
fputc(c,f2);
fputc(d,f2);
}
fclose(f2);
fclose(f1);
return 0;
}
#endif
#ifdef TESTING
int main(void)
{
codecs_t **codecs, *c;
int i,j, nr_codecs, state;
if (!(codecs = parse_codec_cfg("DOCS/codecs.conf")))
return 0;
if (!codecs[0])
printf("no videoconfig.\n");
if (!codecs[1])
printf("no audioconfig.\n");
printf("videocodecs:\n");
c = codecs[0];
nr_codecs = nr_vcodecs;
state = 0;
next:
if (c) {
printf("number of codecs: %d\n", nr_codecs);
for(i=0;i<nr_codecs;i++, c++){
printf("\n============== codec %02d ===============\n",i);
printf("name='%s'\n",c->name);
printf("info='%s'\n",c->info);
printf("comment='%s'\n",c->comment);
printf("dll='%s'\n",c->dll);
printf("flags=%X driver=%d status=%d cpuflags=%d\n",
c->flags, c->driver, c->status, c->cpuflags);
for(j=0;j<CODECS_MAX_FOURCC;j++){
if(c->fourcc[j]!=0xFFFFFFFF){
printf("fourcc %02d: %08X (%.4s) ===> %08X (%.4s)\n",j,c->fourcc[j],(char *) &c->fourcc[j],c->fourccmap[j],(char *) &c->fourccmap[j]);
}
}
for(j=0;j<CODECS_MAX_OUTFMT;j++){
if(c->outfmt[j]!=0xFFFFFFFF){
printf("outfmt %02d: %08X (%.4s) flags: %d\n",j,c->outfmt[j],(char *) &c->outfmt[j],c->outflags[j]);
}
}
printf("GUID: %08lX %04X %04X",c->guid.f1,c->guid.f2,c->guid.f3);
for(j=0;j<8;j++) printf(" %02X",c->guid.f4[j]);
printf("\n");
}
}
if (!state) {
printf("audiocodecs:\n");
c = codecs[1];
nr_codecs = nr_acodecs;
state = 1;
goto next;
}
return 0;
}
#endif
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