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mpv/stream/stream_libarchive.h

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stream: libarchive wrapper for reading compressed archives This works similar to the existing .rar support, but uses libarchive. libarchive supports a number of formats, including zip and (most of) rar. Unfortunately, seeking does not work too well. Most libarchive readers do not support seeking, so it's emulated by skipping data until the target position. On backwards seek, the file is reopened. This works fine on a local machine (and if the file is not too large), but will perform not so well over network connection. This is disabled by default for now. One reason is that we try libarchive on every file we open, before trying libavformat, and I'm not sure if I trust libarchive that much yet. Another reason is that this breaks multivolume rar support. While libarchive supports seeking in rar, and (probably) supports multivolume archive, our support of libarchive (probably) does not. I don't care about multivolume rar, but vocal users do.
2015-08-16 22:55:26 +00:00
struct mp_log;
struct mp_archive {
struct archive *arch;
stream_libarchive: add multivolume support This commit introduces logic to read other volumes from the same source as the primary archive. Both .rar formats as well as 7z are supported for now. It also changes the libarchive callback structure to be per-volume consistent with the libarchive intenal client data array constructed with archive_read_append_callback_data. Added open, close and switch callbacks. Only the latter is strictly required to make sure that the streams always start at position 0, but leaving all volumes open can eat a lot of memory for archives with many parts.
2015-11-09 12:51:29 +00:00
struct stream *primary_src;
stream: libarchive wrapper for reading compressed archives This works similar to the existing .rar support, but uses libarchive. libarchive supports a number of formats, including zip and (most of) rar. Unfortunately, seeking does not work too well. Most libarchive readers do not support seeking, so it's emulated by skipping data until the target position. On backwards seek, the file is reopened. This works fine on a local machine (and if the file is not too large), but will perform not so well over network connection. This is disabled by default for now. One reason is that we try libarchive on every file we open, before trying libavformat, and I'm not sure if I trust libarchive that much yet. Another reason is that this breaks multivolume rar support. While libarchive supports seeking in rar, and (probably) supports multivolume archive, our support of libarchive (probably) does not. I don't care about multivolume rar, but vocal users do.
2015-08-16 22:55:26 +00:00
char buffer[4096];
};
void mp_archive_free(struct mp_archive *mpa);
demux_libarchive: open flat compressed files Things like .gz etc., which have no real file header. A mixed bag, because it e.g. tends to misdetect mp3 files as compressed files or something (of course it has no mp3 support - I don't know as what it detects them). But requested by someone (or maybe not, I'm not sure how to interpret that).
2015-08-17 21:59:44 +00:00
#define MP_ARCHIVE_FLAG_UNSAFE 1
struct mp_archive *mp_archive_new(struct mp_log *log, struct stream *src,
int flags);