lavu/opt: factor per-type dispatch out of av_opt_get()
Will be useful in following commits.
This commit is contained in:
Anton Khirnov
parent
93178c6c1a
commit
a1be08ba05
202
libavutil/opt.c
202
libavutil/opt.c
@ -794,13 +794,114 @@ static void format_duration(char *buf, size_t size, int64_t d)
|
||||
*(--e) = 0;
|
||||
}
|
||||
|
||||
static int opt_get_elem(const AVOption *o, uint8_t **pbuf, size_t buf_len,
|
||||
void *dst, int search_flags)
|
||||
{
|
||||
int ret;
|
||||
|
||||
switch (o->type) {
|
||||
case AV_OPT_TYPE_BOOL:
|
||||
ret = snprintf(*pbuf, buf_len, "%s", get_bool_name(*(int *)dst));
|
||||
break;
|
||||
case AV_OPT_TYPE_FLAGS:
|
||||
ret = snprintf(*pbuf, buf_len, "0x%08X", *(int *)dst);
|
||||
break;
|
||||
case AV_OPT_TYPE_INT:
|
||||
ret = snprintf(*pbuf, buf_len, "%d", *(int *)dst);
|
||||
break;
|
||||
case AV_OPT_TYPE_INT64:
|
||||
ret = snprintf(*pbuf, buf_len, "%"PRId64, *(int64_t *)dst);
|
||||
break;
|
||||
case AV_OPT_TYPE_UINT64:
|
||||
ret = snprintf(*pbuf, buf_len, "%"PRIu64, *(uint64_t *)dst);
|
||||
break;
|
||||
case AV_OPT_TYPE_FLOAT:
|
||||
ret = snprintf(*pbuf, buf_len, "%f", *(float *)dst);
|
||||
break;
|
||||
case AV_OPT_TYPE_DOUBLE:
|
||||
ret = snprintf(*pbuf, buf_len, "%f", *(double *)dst);
|
||||
break;
|
||||
case AV_OPT_TYPE_VIDEO_RATE:
|
||||
case AV_OPT_TYPE_RATIONAL:
|
||||
ret = snprintf(*pbuf, buf_len, "%d/%d", ((AVRational *)dst)->num, ((AVRational *)dst)->den);
|
||||
break;
|
||||
case AV_OPT_TYPE_CONST:
|
||||
ret = snprintf(*pbuf, buf_len, "%"PRId64, o->default_val.i64);
|
||||
break;
|
||||
case AV_OPT_TYPE_STRING:
|
||||
if (*(uint8_t **)dst) {
|
||||
*pbuf = av_strdup(*(uint8_t **)dst);
|
||||
} else if (search_flags & AV_OPT_ALLOW_NULL) {
|
||||
*pbuf = NULL;
|
||||
return 0;
|
||||
} else {
|
||||
*pbuf = av_strdup("");
|
||||
}
|
||||
return *pbuf ? 0 : AVERROR(ENOMEM);
|
||||
case AV_OPT_TYPE_BINARY: {
|
||||
const uint8_t *bin;
|
||||
int len;
|
||||
|
||||
if (!*(uint8_t **)dst && (search_flags & AV_OPT_ALLOW_NULL)) {
|
||||
*pbuf = NULL;
|
||||
return 0;
|
||||
}
|
||||
len = *(int *)(((uint8_t *)dst) + sizeof(uint8_t *));
|
||||
if ((uint64_t)len * 2 + 1 > INT_MAX)
|
||||
return AVERROR(EINVAL);
|
||||
if (!(*pbuf = av_malloc(len * 2 + 1)))
|
||||
return AVERROR(ENOMEM);
|
||||
if (!len) {
|
||||
*pbuf[0] = '\0';
|
||||
return 0;
|
||||
}
|
||||
bin = *(uint8_t **)dst;
|
||||
for (int i = 0; i < len; i++)
|
||||
snprintf(*pbuf + i * 2, 3, "%02X", bin[i]);
|
||||
return 0;
|
||||
}
|
||||
case AV_OPT_TYPE_IMAGE_SIZE:
|
||||
ret = snprintf(*pbuf, buf_len, "%dx%d", ((int *)dst)[0], ((int *)dst)[1]);
|
||||
break;
|
||||
case AV_OPT_TYPE_PIXEL_FMT:
|
||||
ret = snprintf(*pbuf, buf_len, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(*(enum AVPixelFormat *)dst), "none"));
|
||||
break;
|
||||
case AV_OPT_TYPE_SAMPLE_FMT:
|
||||
ret = snprintf(*pbuf, buf_len, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(*(enum AVSampleFormat *)dst), "none"));
|
||||
break;
|
||||
case AV_OPT_TYPE_DURATION: {
|
||||
int64_t i64 = *(int64_t *)dst;
|
||||
format_duration(*pbuf, buf_len, i64);
|
||||
ret = strlen(*pbuf); // no overflow possible, checked by an assert
|
||||
break;
|
||||
}
|
||||
case AV_OPT_TYPE_COLOR:
|
||||
ret = snprintf(*pbuf, buf_len, "0x%02x%02x%02x%02x",
|
||||
(int)((uint8_t *)dst)[0], (int)((uint8_t *)dst)[1],
|
||||
(int)((uint8_t *)dst)[2], (int)((uint8_t *)dst)[3]);
|
||||
break;
|
||||
case AV_OPT_TYPE_CHLAYOUT:
|
||||
ret = av_channel_layout_describe(dst, *pbuf, buf_len);
|
||||
break;
|
||||
case AV_OPT_TYPE_DICT:
|
||||
if (!*(AVDictionary **)dst && (search_flags & AV_OPT_ALLOW_NULL)) {
|
||||
*pbuf = NULL;
|
||||
return 0;
|
||||
}
|
||||
return av_dict_get_string(*(AVDictionary **)dst, (char **)pbuf, '=', ':');
|
||||
default:
|
||||
return AVERROR(EINVAL);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
|
||||
{
|
||||
void *dst, *target_obj;
|
||||
const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
|
||||
uint8_t *bin, buf[128];
|
||||
int len, i, ret;
|
||||
int64_t i64;
|
||||
uint8_t *out, buf[128];
|
||||
int ret;
|
||||
|
||||
if (!o || !target_obj || (o->offset<=0 && o->type != AV_OPT_TYPE_CONST))
|
||||
return AVERROR_OPTION_NOT_FOUND;
|
||||
@ -811,98 +912,19 @@ int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
|
||||
dst = (uint8_t *)target_obj + o->offset;
|
||||
|
||||
buf[0] = 0;
|
||||
switch (o->type) {
|
||||
case AV_OPT_TYPE_BOOL:
|
||||
ret = snprintf(buf, sizeof(buf), "%s", get_bool_name(*(int *)dst));
|
||||
break;
|
||||
case AV_OPT_TYPE_FLAGS:
|
||||
ret = snprintf(buf, sizeof(buf), "0x%08X", *(int *)dst);
|
||||
break;
|
||||
case AV_OPT_TYPE_INT:
|
||||
ret = snprintf(buf, sizeof(buf), "%d", *(int *)dst);
|
||||
break;
|
||||
case AV_OPT_TYPE_INT64:
|
||||
ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t *)dst);
|
||||
break;
|
||||
case AV_OPT_TYPE_UINT64:
|
||||
ret = snprintf(buf, sizeof(buf), "%"PRIu64, *(uint64_t *)dst);
|
||||
break;
|
||||
case AV_OPT_TYPE_FLOAT:
|
||||
ret = snprintf(buf, sizeof(buf), "%f", *(float *)dst);
|
||||
break;
|
||||
case AV_OPT_TYPE_DOUBLE:
|
||||
ret = snprintf(buf, sizeof(buf), "%f", *(double *)dst);
|
||||
break;
|
||||
case AV_OPT_TYPE_VIDEO_RATE:
|
||||
case AV_OPT_TYPE_RATIONAL:
|
||||
ret = snprintf(buf, sizeof(buf), "%d/%d", ((AVRational *)dst)->num, ((AVRational *)dst)->den);
|
||||
break;
|
||||
case AV_OPT_TYPE_CONST:
|
||||
ret = snprintf(buf, sizeof(buf), "%"PRId64, o->default_val.i64);
|
||||
break;
|
||||
case AV_OPT_TYPE_STRING:
|
||||
if (*(uint8_t **)dst) {
|
||||
*out_val = av_strdup(*(uint8_t **)dst);
|
||||
} else if (search_flags & AV_OPT_ALLOW_NULL) {
|
||||
*out_val = NULL;
|
||||
return 0;
|
||||
} else {
|
||||
*out_val = av_strdup("");
|
||||
}
|
||||
return *out_val ? 0 : AVERROR(ENOMEM);
|
||||
case AV_OPT_TYPE_BINARY:
|
||||
if (!*(uint8_t **)dst && (search_flags & AV_OPT_ALLOW_NULL)) {
|
||||
*out_val = NULL;
|
||||
return 0;
|
||||
}
|
||||
len = *(int *)(((uint8_t *)dst) + sizeof(uint8_t *));
|
||||
if ((uint64_t)len * 2 + 1 > INT_MAX)
|
||||
return AVERROR(EINVAL);
|
||||
if (!(*out_val = av_malloc(len * 2 + 1)))
|
||||
return AVERROR(ENOMEM);
|
||||
if (!len) {
|
||||
*out_val[0] = '\0';
|
||||
return 0;
|
||||
}
|
||||
bin = *(uint8_t **)dst;
|
||||
for (i = 0; i < len; i++)
|
||||
snprintf(*out_val + i * 2, 3, "%02X", bin[i]);
|
||||
|
||||
out = buf;
|
||||
ret = opt_get_elem(o, &out, sizeof(buf), dst, search_flags);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
if (out != buf) {
|
||||
*out_val = out;
|
||||
return 0;
|
||||
case AV_OPT_TYPE_IMAGE_SIZE:
|
||||
ret = snprintf(buf, sizeof(buf), "%dx%d", ((int *)dst)[0], ((int *)dst)[1]);
|
||||
break;
|
||||
case AV_OPT_TYPE_PIXEL_FMT:
|
||||
ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_pix_fmt_name(*(enum AVPixelFormat *)dst), "none"));
|
||||
break;
|
||||
case AV_OPT_TYPE_SAMPLE_FMT:
|
||||
ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_sample_fmt_name(*(enum AVSampleFormat *)dst), "none"));
|
||||
break;
|
||||
case AV_OPT_TYPE_DURATION:
|
||||
i64 = *(int64_t *)dst;
|
||||
format_duration(buf, sizeof(buf), i64);
|
||||
ret = strlen(buf); // no overflow possible, checked by an assert
|
||||
break;
|
||||
case AV_OPT_TYPE_COLOR:
|
||||
ret = snprintf(buf, sizeof(buf), "0x%02x%02x%02x%02x",
|
||||
(int)((uint8_t *)dst)[0], (int)((uint8_t *)dst)[1],
|
||||
(int)((uint8_t *)dst)[2], (int)((uint8_t *)dst)[3]);
|
||||
break;
|
||||
case AV_OPT_TYPE_CHLAYOUT:
|
||||
ret = av_channel_layout_describe(dst, buf, sizeof(buf));
|
||||
break;
|
||||
case AV_OPT_TYPE_DICT:
|
||||
if (!*(AVDictionary **)dst && (search_flags & AV_OPT_ALLOW_NULL)) {
|
||||
*out_val = NULL;
|
||||
return 0;
|
||||
}
|
||||
return av_dict_get_string(*(AVDictionary **)dst, (char **)out_val, '=', ':');
|
||||
default:
|
||||
return AVERROR(EINVAL);
|
||||
}
|
||||
|
||||
if (ret >= sizeof(buf))
|
||||
return AVERROR(EINVAL);
|
||||
*out_val = av_strdup(buf);
|
||||
*out_val = av_strdup(out);
|
||||
return *out_val ? 0 : AVERROR(ENOMEM);
|
||||
}
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user