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Move av_set_options_string() from libavfilter to libavutil.

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Originally committed as revision 25236 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini
2010-09-27 22:09:53 +00:00
parent 486adc55c0
commit c85eef4ed8
6 changed files with 173 additions and 160 deletions
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2
libavfilter/avfilter.h
View File

@@ -26,7 +26,7 @@
#define LIBAVFILTER_VERSION_MAJOR 1
#define LIBAVFILTER_VERSION_MINOR 47
#define LIBAVFILTER_VERSION_MICRO 0
#define LIBAVFILTER_VERSION_MICRO 1
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \

139
libavfilter/parseutils.c
View File

@@ -251,110 +251,10 @@ int av_parse_color(uint8_t *rgba_color, const char *color_string, void *log_ctx)
return 0;
}
/**
* Store the value in the field in ctx that is named like key.
* ctx must be an AVClass context, storing is done using AVOptions.
*
* @param buf the string to parse, buf will be updated to point at the
* separator just after the parsed key/value pair
* @param key_val_sep a 0-terminated list of characters used to
* separate key from value
* @param pairs_sep a 0-terminated list of characters used to separate
* two pairs from each other
* @return 0 if the key/value pair has been successfully parsed and
* set, or a negative value corresponding to an AVERROR code in case
* of error:
* AVERROR(EINVAL) if the key/value pair cannot be parsed,
* the error code issued by av_set_string3() if the key/value pair
* cannot be set
*/
static int parse_key_value_pair(void *ctx, const char **buf,
const char *key_val_sep, const char *pairs_sep)
{
char *key = av_get_token(buf, key_val_sep);
char *val;
int ret;
if (*key && strspn(*buf, key_val_sep)) {
(*buf)++;
val = av_get_token(buf, pairs_sep);
} else {
av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
av_free(key);
return AVERROR(EINVAL);
}
av_log(ctx, AV_LOG_DEBUG, "Setting value '%s' for key '%s'\n", val, key);
ret = av_set_string3(ctx, key, val, 1, NULL);
if (ret == AVERROR(ENOENT))
av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
av_free(key);
av_free(val);
return ret;
}
int av_set_options_string(void *ctx, const char *opts,
const char *key_val_sep, const char *pairs_sep)
{
int ret, count = 0;
while (*opts) {
if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
return ret;
count++;
if (*opts)
opts++;
}
return count;
}
#ifdef TEST
#undef printf
typedef struct TestContext
{
const AVClass *class;
int num;
int toggle;
char *string;
int flags;
AVRational rational;
} TestContext;
#define OFFSET(x) offsetof(TestContext, x)
#define TEST_FLAG_COOL 01
#define TEST_FLAG_LAME 02
#define TEST_FLAG_MU 04
static const AVOption test_options[]= {
{"num", "set num", OFFSET(num), FF_OPT_TYPE_INT, 0, 0, 100 },
{"toggle", "set toggle", OFFSET(toggle), FF_OPT_TYPE_INT, 0, 0, 1 },
{"rational", "set rational", OFFSET(rational), FF_OPT_TYPE_RATIONAL, 0, 0, 10 },
{"string", "set string", OFFSET(string), FF_OPT_TYPE_STRING, 0, CHAR_MIN, CHAR_MAX },
{"flags", "set flags", OFFSET(flags), FF_OPT_TYPE_FLAGS, 0, 0, INT_MAX, 0, "flags" },
{"cool", "set cool flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_COOL, INT_MIN, INT_MAX, 0, "flags" },
{"lame", "set lame flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_LAME, INT_MIN, INT_MAX, 0, "flags" },
{"mu", "set mu flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_MU, INT_MIN, INT_MAX, 0, "flags" },
{NULL},
};
static const char *test_get_name(void *ctx)
{
return "test";
}
static const AVClass test_class = {
"TestContext",
test_get_name,
test_options
};
int main(void)
{
int i;
@@ -405,45 +305,6 @@ int main(void)
}
}
printf("\nTesting av_set_options_string()\n");
{
TestContext test_ctx;
const char *options[] = {
"",
":",
"=",
"foo=:",
":=foo",
"=foo",
"foo=",
"foo",
"foo=val",
"foo==val",
"toggle=:",
"string=:",
"toggle=1 : foo",
"toggle=100",
"toggle==1",
"flags=+mu-lame : num=42: toggle=0",
"num=42 : string=blahblah",
"rational=0 : rational=1/2 : rational=1/-1",
"rational=-1/0",
};
test_ctx.class = &test_class;
av_opt_set_defaults2(&test_ctx, 0, 0);
test_ctx.string = av_strdup("default");
av_log_set_level(AV_LOG_DEBUG);
for (i=0; i < FF_ARRAY_ELEMS(options); i++) {
av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);
if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)
av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);
printf("\n");
}
}
return 0;
}

19
libavfilter/parseutils.h
View File

@@ -46,23 +46,4 @@
*/
int av_parse_color(uint8_t *rgba_color, const char *color_string, void *log_ctx);
/**
* Parse the key/value pairs list in opts. For each key/value pair
* found, stores the value in the field in ctx that is named like the
* key. ctx must be an AVClass context, storing is done using
* AVOptions.
*
* @param key_val_sep a 0-terminated list of characters used to
* separate key from value
* @param pairs_sep a 0-terminated list of characters used to separate
* two pairs from each other
* @return the number of successfully set key/value pairs, or a negative
* value corresponding to an AVERROR code in case of error:
* AVERROR(EINVAL) if opts cannot be parsed,
* the error code issued by av_set_string3() if a key/value pair
* cannot be set
*/
int av_set_options_string(void *ctx, const char *opts,
const char *key_val_sep, const char *pairs_sep);
#endif /* AVFILTER_PARSEUTILS_H */

2
libavutil/avutil.h
View File

@@ -40,7 +40,7 @@
#define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
#define LIBAVUTIL_VERSION_MAJOR 50
#define LIBAVUTIL_VERSION_MINOR 30
#define LIBAVUTIL_VERSION_MINOR 31
#define LIBAVUTIL_VERSION_MICRO 0
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \

152
libavutil/opt.c
View File

@@ -26,6 +26,7 @@
*/
#include "avutil.h"
#include "avstring.h"
#include "opt.h"
#include "eval.h"
@@ -452,3 +453,154 @@ void av_opt_set_defaults(void *s)
av_opt_set_defaults2(s, 0, 0);
}
/**
* Store the value in the field in ctx that is named like key.
* ctx must be an AVClass context, storing is done using AVOptions.
*
* @param buf the string to parse, buf will be updated to point at the
* separator just after the parsed key/value pair
* @param key_val_sep a 0-terminated list of characters used to
* separate key from value
* @param pairs_sep a 0-terminated list of characters used to separate
* two pairs from each other
* @return 0 if the key/value pair has been successfully parsed and
* set, or a negative value corresponding to an AVERROR code in case
* of error:
* AVERROR(EINVAL) if the key/value pair cannot be parsed,
* the error code issued by av_set_string3() if the key/value pair
* cannot be set
*/
static int parse_key_value_pair(void *ctx, const char **buf,
const char *key_val_sep, const char *pairs_sep)
{
char *key = av_get_token(buf, key_val_sep);
char *val;
int ret;
if (*key && strspn(*buf, key_val_sep)) {
(*buf)++;
val = av_get_token(buf, pairs_sep);
} else {
av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
av_free(key);
return AVERROR(EINVAL);
}
av_log(ctx, AV_LOG_DEBUG, "Setting value '%s' for key '%s'\n", val, key);
ret = av_set_string3(ctx, key, val, 1, NULL);
if (ret == AVERROR(ENOENT))
av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
av_free(key);
av_free(val);
return ret;
}
int av_set_options_string(void *ctx, const char *opts,
const char *key_val_sep, const char *pairs_sep)
{
int ret, count = 0;
while (*opts) {
if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
return ret;
count++;
if (*opts)
opts++;
}
return count;
}
#ifdef TEST
#undef printf
typedef struct TestContext
{
const AVClass *class;
int num;
int toggle;
char *string;
int flags;
AVRational rational;
} TestContext;
#define OFFSET(x) offsetof(TestContext, x)
#define TEST_FLAG_COOL 01
#define TEST_FLAG_LAME 02
#define TEST_FLAG_MU 04
static const AVOption test_options[]= {
{"num", "set num", OFFSET(num), FF_OPT_TYPE_INT, 0, 0, 100 },
{"toggle", "set toggle", OFFSET(toggle), FF_OPT_TYPE_INT, 0, 0, 1 },
{"rational", "set rational", OFFSET(rational), FF_OPT_TYPE_RATIONAL, 0, 0, 10 },
{"string", "set string", OFFSET(string), FF_OPT_TYPE_STRING, 0, CHAR_MIN, CHAR_MAX },
{"flags", "set flags", OFFSET(flags), FF_OPT_TYPE_FLAGS, 0, 0, INT_MAX, 0, "flags" },
{"cool", "set cool flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_COOL, INT_MIN, INT_MAX, 0, "flags" },
{"lame", "set lame flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_LAME, INT_MIN, INT_MAX, 0, "flags" },
{"mu", "set mu flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_MU, INT_MIN, INT_MAX, 0, "flags" },
{NULL},
};
static const char *test_get_name(void *ctx)
{
return "test";
}
static const AVClass test_class = {
"TestContext",
test_get_name,
test_options
};
int main(void)
{
int i;
printf("\nTesting av_set_options_string()\n");
{
TestContext test_ctx;
const char *options[] = {
"",
":",
"=",
"foo=:",
":=foo",
"=foo",
"foo=",
"foo",
"foo=val",
"foo==val",
"toggle=:",
"string=:",
"toggle=1 : foo",
"toggle=100",
"toggle==1",
"flags=+mu-lame : num=42: toggle=0",
"num=42 : string=blahblah",
"rational=0 : rational=1/2 : rational=1/-1",
"rational=-1/0",
};
test_ctx.class = &test_class;
av_opt_set_defaults2(&test_ctx, 0, 0);
test_ctx.string = av_strdup("default");
av_log_set_level(AV_LOG_DEBUG);
for (i=0; i < FF_ARRAY_ELEMS(options); i++) {
av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);
if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)
av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);
printf("\n");
}
}
return 0;
}
#endif

19
libavutil/opt.h
View File

@@ -204,4 +204,23 @@ int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags);
void av_opt_set_defaults(void *s);
void av_opt_set_defaults2(void *s, int mask, int flags);
/**
* Parse the key/value pairs list in opts. For each key/value pair
* found, stores the value in the field in ctx that is named like the
* key. ctx must be an AVClass context, storing is done using
* AVOptions.
*
* @param key_val_sep a 0-terminated list of characters used to
* separate key from value
* @param pairs_sep a 0-terminated list of characters used to separate
* two pairs from each other
* @return the number of successfully set key/value pairs, or a negative
* value corresponding to an AVERROR code in case of error:
* AVERROR(EINVAL) if opts cannot be parsed,
* the error code issued by av_set_string3() if a key/value pair
* cannot be set
*/
int av_set_options_string(void *ctx, const char *opts,
const char *key_val_sep, const char *pairs_sep);
#endif /* AVUTIL_OPT_H */