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avformat/tee: Process strings immediately if possible 

This avoids having to free them manually lateron.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-09-06 03:03:11 +02:00
parent 3a27fcb168
commit b3612b5f52
1 changed files with 23 additions and 31 deletions
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54
libavformat/tee.c
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@ -96,12 +96,8 @@ static inline int parse_slave_failure_policy_option(const char *opt, TeeSlave *t
return AVERROR(EINVAL);
}
static int parse_slave_fifo_options(const char *use_fifo,
const char *fifo_options, TeeSlave *tee_slave)
static int parse_slave_fifo_policy(const char *use_fifo, TeeSlave *tee_slave)
{
int ret = 0;
if (use_fifo) {
/*TODO - change this to use proper function for parsing boolean
* options when there is one */
if (av_match_name(use_fifo, "true,y,yes,enable,enabled,on,1")) {
@ -111,12 +107,12 @@ static int parse_slave_fifo_options(const char *use_fifo,
} else {
return AVERROR(EINVAL);
}
}
return 0;
}
if (fifo_options)
ret = av_dict_parse_string(&tee_slave->fifo_options, fifo_options, "=", ":", 0);
return ret;
static int parse_slave_fifo_options(const char *fifo_options, TeeSlave *tee_slave)
{
return av_dict_parse_string(&tee_slave->fifo_options, fifo_options, "=", ":", 0);
}
static int close_slave(TeeSlave *tee_slave)
@ -174,19 +170,31 @@ static int open_slave(AVFormatContext *avf, char *slave, TeeSlave *tee_slave)
if ((ret = ff_tee_parse_slave_options(avf, slave, &options, &filename)) < 0)
return ret;
#define STEAL_OPTION(option, field) do { \
#define CONSUME_OPTION(option, field, action) do { \
if ((entry = av_dict_get(options, option, NULL, 0))) { \
field = entry->value; \
entry->value = NULL; /* prevent it from being freed */ \
{ action } \
av_dict_set(&options, option, NULL, 0); \
} \
} while (0)
#define STEAL_OPTION(option, field) \
CONSUME_OPTION(option, field, \
entry->value = NULL; /* prevent it from being freed */)
#define PROCESS_OPTION(option, field, function, on_error) \
CONSUME_OPTION(option, field, if ((ret = function) < 0) { { on_error } goto end; })
STEAL_OPTION("f", format);
STEAL_OPTION("select", select);
STEAL_OPTION("onfail", on_fail);
STEAL_OPTION("use_fifo", use_fifo);
STEAL_OPTION("fifo_options", fifo_options_str);
PROCESS_OPTION("onfail", on_fail,
parse_slave_failure_policy_option(on_fail, tee_slave),
av_log(avf, AV_LOG_ERROR, "Invalid onfail option value, "
"valid options are 'abort' and 'ignore'\n"););
PROCESS_OPTION("use_fifo", use_fifo,
parse_slave_fifo_policy(use_fifo, tee_slave),
av_log(avf, AV_LOG_ERROR, "Error parsing fifo options: %s\n",
av_err2str(ret)););
PROCESS_OPTION("fifo_options", fifo_options_str,
parse_slave_fifo_options(fifo_options_str, tee_slave), ;);
entry = NULL;
while ((entry = av_dict_get(options, "bsfs", entry, AV_DICT_IGNORE_SUFFIX))) {
/* trim out strlen("bsfs") characters from key */
@ -194,19 +202,6 @@ static int open_slave(AVFormatContext *avf, char *slave, TeeSlave *tee_slave)
av_dict_set(&options, entry->key, NULL, 0);
}
ret = parse_slave_failure_policy_option(on_fail, tee_slave);
if (ret < 0) {
av_log(avf, AV_LOG_ERROR,
"Invalid onfail option value, valid options are 'abort' and 'ignore'\n");
goto end;
}
ret = parse_slave_fifo_options(use_fifo, fifo_options_str, tee_slave);
if (ret < 0) {
av_log(avf, AV_LOG_ERROR, "Error parsing fifo options: %s\n", av_err2str(ret));
goto end;
}
if (tee_slave->use_fifo) {
if (options) {
@ -405,9 +400,6 @@ static int open_slave(AVFormatContext *avf, char *slave, TeeSlave *tee_slave)
end:
av_free(format);
av_free(select);
av_free(on_fail);
av_free(use_fifo);
av_free(fifo_options_str);
av_dict_free(&options);
av_dict_free(&bsf_options);
av_freep(&tmp_select);