X-Git-Url: https://git.piment-noir.org/?p=deb_ffmpeg.git;a=blobdiff_plain;f=ffmpeg%2Flibavformat%2Fconcat.c;h=81fe97082c432e8cdd758d1263af50427fa81695;hp=3bbc83dfef16b629264c975dad4c28a37cee002d;hb=f6fa7814ccfe3e76514b36cf04f5cd3cb657c8cf;hpb=2ba45a602cbfa7b771effba9b11bb4245c21bc00 diff --git a/ffmpeg/libavformat/concat.c b/ffmpeg/libavformat/concat.c index 3bbc83d..81fe970 100644 --- a/ffmpeg/libavformat/concat.c +++ b/ffmpeg/libavformat/concat.c @@ -21,9 +21,10 @@ * 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 "|" @@ -59,24 +60,26 @@ static av_cold int concat_open(URLContext *h, const char *uri, int flags) char *node_uri = NULL; int err = 0; int64_t size; - size_t len, i; + size_t len, i; URLContext *uc; struct concat_data *data = h->priv_data; struct concat_nodes *nodes; av_strstart(uri, "concat:", &uri); - 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_realloc(NULL, sizeof(*nodes) * len))) { + if (!(nodes = av_realloc(NULL, sizeof(*nodes) * len))) return AVERROR(ENOMEM); - } else + else data->nodes = nodes; /* handle input */ @@ -87,8 +90,8 @@ static av_cold int concat_open(URLContext *h, const char *uri, int flags) len = strcspn(uri, AV_CAT_SEPARATOR); if ((err = av_reallocp(&node_uri, len + 1)) < 0) break; - 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, @@ -124,16 +127,17 @@ static int concat_read(URLContext *h, unsigned char *buf, int size) 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; @@ -151,9 +155,7 @@ static int64_t concat_seek(URLContext *h, int64_t pos, int whence) 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: