* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "avformat.h"
#include "libavutil/avstring.h"
#include "libavutil/mem.h"
+
+#include "avformat.h"
#include "url.h"
#define AV_CAT_SEPARATOR "|"
err |= ffurl_close(nodes[i].uc);
av_freep(&data->nodes);
- av_freep(&h->priv_data);
return err < 0 ? -1 : 0;
}
static av_cold int concat_open(URLContext *h, const char *uri, int flags)
{
- char *node_uri = NULL, *tmp_uri;
+ char *node_uri = NULL;
int err = 0;
int64_t size;
- size_t len, i;
+ size_t len, i;
URLContext *uc;
- struct concat_data *data;
+ struct concat_data *data = h->priv_data;
struct concat_nodes *nodes;
av_strstart(uri, "concat:", &uri);
- /* creating data */
- if (!(data = av_mallocz(sizeof(*data))))
- return AVERROR(ENOMEM);
- h->priv_data = data;
-
- for (i = 0, len = 1; uri[i]; i++)
- if (uri[i] == *AV_CAT_SEPARATOR)
+ for (i = 0, len = 1; uri[i]; i++) {
+ if (uri[i] == *AV_CAT_SEPARATOR) {
/* integer overflow */
if (++len == UINT_MAX / sizeof(*nodes)) {
av_freep(&h->priv_data);
return AVERROR(ENAMETOOLONG);
}
+ }
+ }
- if (!(nodes = av_malloc(sizeof(*nodes) * len))) {
- av_freep(&h->priv_data);
+ if (!(nodes = av_realloc(NULL, sizeof(*nodes) * len)))
return AVERROR(ENOMEM);
- } else
+ else
data->nodes = nodes;
/* handle input */
for (i = 0; *uri; i++) {
/* parsing uri */
len = strcspn(uri, AV_CAT_SEPARATOR);
- if (!(tmp_uri = av_realloc(node_uri, len+1))) {
- err = AVERROR(ENOMEM);
+ if ((err = av_reallocp(&node_uri, len + 1)) < 0)
break;
- } else
- node_uri = tmp_uri;
- av_strlcpy(node_uri, uri, len+1);
- uri += len + strspn(uri+len, AV_CAT_SEPARATOR);
+ av_strlcpy(node_uri, uri, len + 1);
+ uri += len + strspn(uri + len, AV_CAT_SEPARATOR);
/* creating URLContext */
- if ((err = ffurl_open(&uc, node_uri, flags, &h->interrupt_callback)) < 0)
+ if ((err = ffurl_open(&uc, node_uri, flags,
+ &h->interrupt_callback, NULL)) < 0)
break;
/* creating size */
if (err < 0)
concat_close(h);
- else if (!(nodes = av_realloc(nodes, data->length * sizeof(*nodes)))) {
+ else if ((err = av_reallocp(&nodes, data->length * sizeof(*nodes))) < 0)
concat_close(h);
- err = AVERROR(ENOMEM);
- } else
+ else
data->nodes = nodes;
return err;
}
int result, total = 0;
struct concat_data *data = h->priv_data;
struct concat_nodes *nodes = data->nodes;
- size_t i = data->current;
+ size_t i = data->current;
while (size > 0) {
result = ffurl_read(nodes[i].uc, buf, size);
if (result < 0)
return total ? total : result;
- if (!result)
+ if (!result) {
if (i + 1 == data->length ||
ffurl_seek(nodes[++i].uc, 0, SEEK_SET) < 0)
break;
+ }
total += result;
buf += result;
size -= result;
switch (whence) {
case SEEK_END:
- for (i = data->length - 1;
- i && pos < -nodes[i].size;
- i--)
+ for (i = data->length - 1; i && pos < -nodes[i].size; i--)
pos += nodes[i].size;
break;
case SEEK_CUR:
}
URLProtocol ff_concat_protocol = {
- .name = "concat",
- .url_open = concat_open,
- .url_read = concat_read,
- .url_seek = concat_seek,
- .url_close = concat_close,
+ .name = "concat",
+ .url_open = concat_open,
+ .url_read = concat_read,
+ .url_seek = concat_seek,
+ .url_close = concat_close,
+ .priv_data_size = sizeof(struct concat_data),
};