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* still unfinished code for Options 

Originally committed as revision 1568 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Zdenek Kabelac 2003-02-10 09:38:38 +00:00
parent 5c91a6755b
commit 97d96aaa76
2 changed files with 117 additions and 224 deletions
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72
libavcodec/avcodec.h
View File

@ -950,6 +950,42 @@ typedef struct AVCodecContext {
enum PixelFormat (*get_format)(struct AVCodecContext *s, enum PixelFormat * fmt);
} AVCodecContext;
//void avcodec_getopt(AVCodecContext* avctx, const char* str, avc_config_t** config);
typedef struct AVOption {
/** options' name */
const char *name; /* if name is NULL, it indicates a link to next */
/** short English text help */
const char *help;
/** offset to context structure where the parsed value should be stored */
int offset;
/** options' type */
int type;
#define FF_OPT_TYPE_BOOL 1 // boolean - true,1,on (or simply presence)
#define FF_OPT_TYPE_DOUBLE 2 // double
#define FF_OPT_TYPE_INT 3 // integer
#define FF_OPT_TYPE_STRING 4 // string (finished with \0)
#define FF_OPT_TYPE_MASK 0x1f // mask for types - upper bits are various flags
//#define FF_OPT_TYPE_EXPERT 0x20 // flag for expert option
#define FF_OPT_TYPE_FLAG (FF_OPT_TYPE_BOOL | 0x40)
#define FF_OPT_TYPE_RCOVERRIDE (FF_OPT_TYPE_STRING | 0x80)
/** min value (min == max -> no limits) */
double min;
/** maximum value for double/int */
double max;
/** default boo [0,1]l/double/int value */
double defval;
/**
* default string value (with optional semicolon delimited extra option-list
* i.e. option1;option2;option3
* defval might select other then first argument as default
*/
const char *defstr;
const struct AVOption *sub; /* used when name is NULL */
/* when it's NULL return to previous level (or finish reading) */
#define FF_OPT_MAX_DEPTH 10
} AVOption;
typedef struct AVCodec {
const char *name;
int type;
@ -961,6 +997,7 @@ typedef struct AVCodec {
int (*decode)(AVCodecContext *, void *outdata, int *outdata_size,
UINT8 *buf, int buf_size);
int capabilities;
const AVOption *options;
struct AVCodec *next;
} AVCodec;
@ -1135,40 +1172,7 @@ void avcodec_register_all(void);
void avcodec_flush_buffers(AVCodecContext *avctx);
typedef struct {
/** options' name with default value*/
const char* name;
/** English text help */
const char* help;
/** type of variable */
int type;
#define FF_CONF_TYPE_BOOL 1 // boolean - true,1,on (or simply presence)
#define FF_CONF_TYPE_DOUBLE 2 // double
#define FF_CONF_TYPE_INT 3 // integer
#define FF_CONF_TYPE_STRING 4 // string (finished with \0)
#define FF_CONF_TYPE_MASK 0x1f // mask for types - upper bits are various flags
#define FF_CONF_TYPE_EXPERT 0x20 // flag for expert option
#define FF_CONF_TYPE_FLAG (FF_CONF_TYPE_BOOL | 0x40)
#define FF_CONF_TYPE_RCOVERIDE (FF_CONF_TYPE_STRING | 0x80)
/** where the parsed value should be stored */
void* val;
/** min value (min == max -> no limits) */
double min;
/** maximum value for double/int */
double max;
/** default boo [0,1]l/double/int value */
double defval;
/**
* default string value (with optional semicolon delimited extra option-list
* i.e. option1;option2;option3
* defval might select other then first argument as default
*/
const char* defstr;
/** char* list of supported codecs (i.e. ",msmpeg4,h263," NULL - everything */
const char* supported;
} avc_config_t;
void avcodec_getopt(AVCodecContext* avctx, const char* str, avc_config_t** config);
/**
* Interface for 0.5.0 version
@ -1254,7 +1258,7 @@ void av_free(void *ptr);
char *av_strdup(const char *s);
void __av_freep(void **ptr);
#define av_freep(p) __av_freep((void **)(p))
void *av_fast_realloc(void *ptr, int *size, int min_size);
void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
/* for static data only */
/* call av_free_static to release all staticaly allocated tables */
void av_free_static(void);

235
libavcodec/opts.c
View File

@ -9,17 +9,15 @@
*/
#include "avcodec.h"
#ifdef OPTS_MAIN
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#endif
/*
* todo - use for decoder options also
*/
extern const AVOption common_options[2];
static int parse_bool(avc_config_t* c, char* s)
const AVOption common_options[2] = {
AVOPTION_CODEC_INT("common", "test", bit_rate, 0, 10, 0),
AVOPTION_END()
};
static int parse_bool(const AVOption *c, char *s, int *var)
{
int b = 1; /* by default -on- when present */
if (s) {
@ -33,12 +31,11 @@ static int parse_bool(avc_config_t* c, char* s)
return -1;
}
if (c && c->val)
*(int*)(c->val) = b;
*var = b;
return 0;
}
static int parse_double(avc_config_t* c, char* s)
static int parse_double(const AVOption *c, char *s, double *var)
{
double d;
if (!s)
@ -51,12 +48,11 @@ static int parse_double(avc_config_t* c, char* s)
return -1;
}
}
if (c && c->val)
*(double*)(c->val) = d;
*var = d;
return 0;
}
static int parse_int(avc_config_t* c, char* s)
static int parse_int(const AVOption* c, char* s, int* var)
{
int i;
if (!s)
@ -69,25 +65,23 @@ static int parse_int(avc_config_t* c, char* s)
return -1;
}
}
if (c && c->val)
*(int*)(c->val) = i;
*var = i;
return 0;
}
static int parse_string(AVCodecContext* avctx, avc_config_t* c, char* s)
static int parse_string(const AVOption *c, char *s, AVCodecContext *avctx, char **var)
{
if (!s)
return -1;
if (c->type == FF_CONF_TYPE_RCOVERIDE) {
if (c->type == FF_OPT_TYPE_RCOVERRIDE) {
int sf, ef, qs;
float qf;
if (sscanf(s, "%d,%d,%d,%f", &sf, &ef, &qs, &qf) == 4 && sf < ef) {
RcOverride *o;
*((RcOverride**)c->val) =
realloc(*((RcOverride**)c->val),
avctx->rc_override = av_realloc(avctx->rc_override,
sizeof(RcOverride) * (avctx->rc_override_count + 1));
o = *((RcOverride**)c->val) + avctx->rc_override_count++;
o = avctx->rc_override + avctx->rc_override_count++;
o->start_frame = sf;
o->end_frame = ef;
o->qscale = qs;
@ -98,14 +92,27 @@ static int parse_string(AVCodecContext* avctx, avc_config_t* c, char* s)
printf("incorrect/unparsable Rc: \"%s\"\n", s);
}
} else
(char*)(c->val) = strdup(s);
*var = av_strdup(s);
return 0;
}
static int parse(AVCodecContext* avctx, avc_config_t* config, char* str)
/**
*
* \param codec codec for option parsing
* \param opts string with options for parsing
* \param avctx where to store parsed results
*/
int avcodec_parse(const AVCodec *codec, const char *opts, AVCodecContext *avctx)
{
while (str && *str) {
avc_config_t* c = config;
int r = 0;
char* dopts = av_strdup(opts);
if (dopts) {
char *str = dopts;
while (str && *str && r == 0) {
const AVOption *stack[FF_OPT_MAX_DEPTH];
int depth = 0;
const AVOption *c = codec->options;
char* e = strchr(str, ':');
char* p;
if (e)
@ -115,164 +122,46 @@ static int parse(AVCodecContext* avctx, avc_config_t* config, char* str)
if (p)
*p++ = 0;
while (c->name) {
// going through option structures
for (;;) {
if (!c->name) {
if (c->sub) {
stack[depth++] = c;
c = c->sub;
assert(depth > FF_OPT_MAX_DEPTH);
} else {
if (depth == 0)
break; // finished
c = stack[--depth];
c++;
}
} else {
if (!strcmp(c->name, str)) {
switch (c->type & FF_CONF_TYPE_MASK) {
case FF_CONF_TYPE_BOOL:
parse_bool(c, p);
void* ptr = (char*)avctx + c->offset;
switch (c->type & FF_OPT_TYPE_MASK) {
case FF_OPT_TYPE_BOOL:
r = parse_bool(c, p, (int*)ptr);
break;
case FF_CONF_TYPE_DOUBLE:
parse_double(c, p);
case FF_OPT_TYPE_DOUBLE:
r = parse_double(c, p, (double*)ptr);
break;
case FF_CONF_TYPE_INT:
parse_int(c, p);
case FF_OPT_TYPE_INT:
r = parse_int(c, p, (int*)ptr);
break;
case FF_CONF_TYPE_STRING:
parse_string(avctx, c, p);
case FF_OPT_TYPE_STRING:
r = parse_string(c, p, avctx, (char**)ptr);
break;
default:
abort();
break;
assert(0 == 1);
}
}
c++;
}
}
str = e;
}
return 0;
av_free(dopts);
}
/**
*
* \param avctx where to store parsed results
* \param str string with options for parsing
* or selectional string (pick only options appliable
* for codec - use ,msmpeg4, (with commas to avoid mismatch)
* \param config allocated avc_config_t for external parsing
* i.e. external program might learn about all available
* options for given codec
**/
void avcodec_getopt(AVCodecContext* avctx, const char* str, avc_config_t** config)
{
AVCodecContext avctx_tmp;
AVCodecContext* ctx = (avctx) ? avctx : &avctx_tmp;
static const char* class_h263 = ",msmpeg4,";
//"huffyuv,wmv1,msmpeg4v2,msmpeg4,mpeg4,mpeg1,mpeg1video,mjpeg,rv10,h263,h263p"
avc_config_t cnf[] =
{
// FIXME: sorted by importance!!!
// expert option should follow more common ones
{
"bitrate", "desired video bitrate",
FF_CONF_TYPE_INT, &ctx->bit_rate, 4, 240000000, 800000, NULL, class_h263
}, {
"vhq", "very high quality",
FF_CONF_TYPE_FLAG, &ctx->flags, 0, CODEC_FLAG_HQ, 0, NULL, class_h263
}, {
"ratetol", "number of bits the bitstream is allowed to diverge from the reference"
"the reference can be CBR (for CBR pass1) or VBR (for pass2)",
FF_CONF_TYPE_INT, &ctx->bit_rate_tolerance, 4, 240000000, 8000, NULL, class_h263
}, {
"qmin", "minimum quantizer", FF_CONF_TYPE_INT, &ctx->qmin, 1, 31, 2, NULL, class_h263
}, {
"qmax", "maximum qunatizer", FF_CONF_TYPE_INT, &ctx->qmax, 1, 31, 31, NULL, class_h263
}, {
"rc_eq", "rate control equation",
FF_CONF_TYPE_STRING, &ctx->rc_eq, 0, 0, 0, "tex^qComp" /* FILLME options */, class_h263
}, {
"rc_minrate", "rate control minimum bitrate",
FF_CONF_TYPE_INT, &ctx->rc_min_rate, 4, 24000000, 0, NULL, class_h263
}, {
"rc_maxrate", "rate control maximum bitrate",
FF_CONF_TYPE_INT, &ctx->rc_max_rate, 4, 24000000, 0, NULL, class_h263
}, {
"psnr", "calculate PSNR of compressed frames",
FF_CONF_TYPE_FLAG, &ctx->flags, 0, CODEC_FLAG_PSNR, 0, NULL, class_h263
}, {
"rc_override", "ratecontrol override (=startframe,endframe,qscale,quality_factor)",
FF_CONF_TYPE_RCOVERIDE, &ctx->rc_override, 0, 0, 0, "0,0,0,0", class_h263
},
{ NULL, NULL, 0, NULL, 0, 0, 0, NULL, NULL }
};
if (config) {
*config = malloc(sizeof(cnf));
if (*config) {
avc_config_t* src = cnf;
avc_config_t* dst = *config;
while (src->name) {
if (!str || !src->supported || strstr(src->supported, str))
memcpy(dst++, src, sizeof(avc_config_t));
src++;
return r;
}
memset(dst, 0, sizeof(avc_config_t));
}
} else if (str) {
char* s = strdup(str);
if (s) {
parse(avctx, cnf, s);
free(s);
}
}
}
#ifdef OPTS_MAIN
/*
* API test -
* arg1: options
* arg2: codec type
*
* compile standalone: make CFLAGS="-DOPTS_MAIN" opts
*/
int main(int argc, char* argv[])
{
AVCodecContext avctx;
avc_config_t* config;
char* def = malloc(5000);
const char* col = "";
int i = 0;
memset(&avctx, 0, sizeof(avctx));
*def = 0;
avcodec_getopt(&avctx, argv[1], NULL);
avcodec_getopt(NULL, (argc > 2) ? argv[2] : NULL, &config);
if (config)
while (config->name) {
int t = config->type & FF_CONF_TYPE_MASK;
printf("Config %s %s\n", config->name,
t == FF_CONF_TYPE_BOOL ? "bool" :
t == FF_CONF_TYPE_DOUBLE ? "double" :
t == FF_CONF_TYPE_INT ? "integer" :
t == FF_CONF_TYPE_STRING ? "string" :
"unknown??");
switch (t) {
case FF_CONF_TYPE_BOOL:
i += sprintf(def + i, "%s%s=%s",
col, config->name,
config->defval != 0. ? "on" : "off");
break;
case FF_CONF_TYPE_DOUBLE:
i += sprintf(def + i, "%s%s=%f",
col, config->name, config->defval);
break;
case FF_CONF_TYPE_INT:
i += sprintf(def + i, "%s%s=%d",
col, config->name, (int) config->defval);
break;
case FF_CONF_TYPE_STRING:
i += sprintf(def + i, "%s%s=%s",
col, config->name, config->defstr);
break;
}
col = ":";
config++;
}
printf("Default Options: %s\n", def);
return 0;
}
#endif