mpv/demux/demux_cue.c

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/*
* Original author: Uoti Urpala
*
* This file is part of mpv.
*
Relicense some non-MPlayer source files to LGPL 2.1 or later This covers source files which were added in mplayer2 and mpv times only, and where all code is covered by LGPL relicensing agreements. There are probably more files to which this applies, but I'm being conservative here. A file named ao_sdl.c exists in MPlayer too, but the mpv one is a complete rewrite, and was added some time after the original ao_sdl.c was removed. The same applies to vo_sdl.c, for which the SDL2 API is radically different in addition (MPlayer supports SDL 1.2 only). common.c contains only code written by me. But common.h is a strange case: although it originally was named mp_common.h and exists in MPlayer too, by now it contains only definitions written by uau and me. The exceptions are the CONTROL_ defines - thus not changing the license of common.h yet. codec_tags.c contained once large tables generated from MPlayer's codecs.conf, but all of these tables were removed. From demux_playlist.c I'm removing a code fragment from someone who was not asked; this probably could be done later (see commit 15dccc37). misc.c is a bit complicated to reason about (it was split off mplayer.c and thus contains random functions out of this file), but actually all functions have been added post-MPlayer. Except get_relative_time(), which was written by uau, but looks similar to 3 different versions of something similar in each of the Unix/win32/OSX timer source files. I'm not sure what that means in regards to copyright, so I've just moved it into another still-GPL source file for now. screenshot.c once had some minor parts of MPlayer's vf_screenshot.c, but they're all gone.
2016-01-19 17:36:06 +00:00
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Relicense some non-MPlayer source files to LGPL 2.1 or later This covers source files which were added in mplayer2 and mpv times only, and where all code is covered by LGPL relicensing agreements. There are probably more files to which this applies, but I'm being conservative here. A file named ao_sdl.c exists in MPlayer too, but the mpv one is a complete rewrite, and was added some time after the original ao_sdl.c was removed. The same applies to vo_sdl.c, for which the SDL2 API is radically different in addition (MPlayer supports SDL 1.2 only). common.c contains only code written by me. But common.h is a strange case: although it originally was named mp_common.h and exists in MPlayer too, by now it contains only definitions written by uau and me. The exceptions are the CONTROL_ defines - thus not changing the license of common.h yet. codec_tags.c contained once large tables generated from MPlayer's codecs.conf, but all of these tables were removed. From demux_playlist.c I'm removing a code fragment from someone who was not asked; this probably could be done later (see commit 15dccc37). misc.c is a bit complicated to reason about (it was split off mplayer.c and thus contains random functions out of this file), but actually all functions have been added post-MPlayer. Except get_relative_time(), which was written by uau, but looks similar to 3 different versions of something similar in each of the Unix/win32/OSX timer source files. I'm not sure what that means in regards to copyright, so I've just moved it into another still-GPL source file for now. screenshot.c once had some minor parts of MPlayer's vf_screenshot.c, but they're all gone.
2016-01-19 17:36:06 +00:00
* GNU Lesser General Public License for more details.
*
Relicense some non-MPlayer source files to LGPL 2.1 or later This covers source files which were added in mplayer2 and mpv times only, and where all code is covered by LGPL relicensing agreements. There are probably more files to which this applies, but I'm being conservative here. A file named ao_sdl.c exists in MPlayer too, but the mpv one is a complete rewrite, and was added some time after the original ao_sdl.c was removed. The same applies to vo_sdl.c, for which the SDL2 API is radically different in addition (MPlayer supports SDL 1.2 only). common.c contains only code written by me. But common.h is a strange case: although it originally was named mp_common.h and exists in MPlayer too, by now it contains only definitions written by uau and me. The exceptions are the CONTROL_ defines - thus not changing the license of common.h yet. codec_tags.c contained once large tables generated from MPlayer's codecs.conf, but all of these tables were removed. From demux_playlist.c I'm removing a code fragment from someone who was not asked; this probably could be done later (see commit 15dccc37). misc.c is a bit complicated to reason about (it was split off mplayer.c and thus contains random functions out of this file), but actually all functions have been added post-MPlayer. Except get_relative_time(), which was written by uau, but looks similar to 3 different versions of something similar in each of the Unix/win32/OSX timer source files. I'm not sure what that means in regards to copyright, so I've just moved it into another still-GPL source file for now. screenshot.c once had some minor parts of MPlayer's vf_screenshot.c, but they're all gone.
2016-01-19 17:36:06 +00:00
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <dirent.h>
#include <inttypes.h>
#include "osdep/io.h"
#include "mpv_talloc.h"
#include "misc/bstr.h"
#include "misc/charset_conv.h"
#include "common/msg.h"
#include "demux/demux.h"
#include "options/m_config.h"
#include "options/m_option.h"
#include "options/path.h"
#include "common/common.h"
#include "stream/stream.h"
#include "timeline.h"
#include "cue.h"
#define PROBE_SIZE 512
const struct m_sub_options demux_cue_conf = {
.opts = (const m_option_t[]) {
{"codepage", OPT_REPLACED("metadata-codepage")},
{0}
},
};
struct priv {
struct cue_file *f;
};
static void add_source(struct timeline *tl, struct demuxer *d)
{
MP_TARRAY_APPEND(tl, tl->sources, tl->num_sources, d);
}
static bool try_open(struct timeline *tl, char *filename)
{
struct bstr bfilename = bstr0(filename);
// Avoid trying to open itself or another .cue file. Best would be
// to check the result of demuxer auto-detection, but the demuxer
// API doesn't allow this without opening a full demuxer.
if (bstr_case_endswith(bfilename, bstr0(".cue"))
|| bstrcasecmp(bstr0(tl->demuxer->filename), bfilename) == 0)
return false;
stream, demux: redo origin policy thing mpv has a very weak and very annoying policy that determines whether a playlist should be used or not. For example, if you play a remote playlist, you usually don't want it to be able to read local filesystem entries. (Although for a media player the impact is small I guess.) It's weak and annoying as in that it does not prevent certain cases which could be interpreted as bad in some cases, such as allowing playlists on the local filesystem to reference remote URLs. It probably barely makes sense, but we just want to exclude some other "definitely not a good idea" things, all while playlists generally just work, so whatever. The policy is: - from the command line anything is played - local playlists can reference anything except "unsafe" streams ("unsafe" means special stream inputs like libavfilter graphs) - remote playlists can reference only remote URLs - things like "memory://" and archives are "transparent" to this This commit does... something. It replaces the weird stream flags with a slightly clearer "origin" value, which is now consequently passed down and used everywhere. It fixes some deviations from the described policy. I wanted to force archives to reference only content within them, but this would probably have been more complicated (or required different abstractions), and I'm too lazy to figure it out, so archives are now "transparent" (playlists within archives behave the same outside). There may be a lot of bugs in this. This is unfortunately a very noisy commit because: - every stream open call now needs to pass the origin - so does every demuxer open call (=> params param. gets mandatory) - most stream were changed to provide the "origin" value - the origin value needed to be passed along in a lot of places - I was too lazy to split the commit Fixes: #7274
2019-12-20 08:41:42 +00:00
struct demuxer_params p = {
.stream_flags = tl->stream_origin,
};
struct demuxer *d = demux_open_url(filename, &p, tl->cancel, tl->global);
// Since .bin files are raw PCM data with no headers, we have to explicitly
// open them. Also, try to avoid to open files that are most likely not .bin
// files, as that would only play noise. Checking the file extension is
// fragile, but it's about the only way we have.
// TODO: maybe also could check if the .bin file is a multiple of the Audio
// CD sector size (2352 bytes)
if (!d && bstr_case_endswith(bfilename, bstr0(".bin"))) {
MP_WARN(tl, "CUE: Opening as BIN file!\n");
stream, demux: redo origin policy thing mpv has a very weak and very annoying policy that determines whether a playlist should be used or not. For example, if you play a remote playlist, you usually don't want it to be able to read local filesystem entries. (Although for a media player the impact is small I guess.) It's weak and annoying as in that it does not prevent certain cases which could be interpreted as bad in some cases, such as allowing playlists on the local filesystem to reference remote URLs. It probably barely makes sense, but we just want to exclude some other "definitely not a good idea" things, all while playlists generally just work, so whatever. The policy is: - from the command line anything is played - local playlists can reference anything except "unsafe" streams ("unsafe" means special stream inputs like libavfilter graphs) - remote playlists can reference only remote URLs - things like "memory://" and archives are "transparent" to this This commit does... something. It replaces the weird stream flags with a slightly clearer "origin" value, which is now consequently passed down and used everywhere. It fixes some deviations from the described policy. I wanted to force archives to reference only content within them, but this would probably have been more complicated (or required different abstractions), and I'm too lazy to figure it out, so archives are now "transparent" (playlists within archives behave the same outside). There may be a lot of bugs in this. This is unfortunately a very noisy commit because: - every stream open call now needs to pass the origin - so does every demuxer open call (=> params param. gets mandatory) - most stream were changed to provide the "origin" value - the origin value needed to be passed along in a lot of places - I was too lazy to split the commit Fixes: #7274
2019-12-20 08:41:42 +00:00
p.force_format = "rawaudio";
d = demux_open_url(filename, &p, tl->cancel, tl->global);
}
if (d) {
add_source(tl, d);
return true;
}
MP_ERR(tl, "Could not open source '%s'!\n", filename);
return false;
}
static bool open_source(struct timeline *tl, char *filename)
{
void *ctx = talloc_new(NULL);
bool res = false;
struct bstr dirname = mp_dirname(tl->demuxer->filename);
struct bstr base_filename = bstr0(mp_basename(filename));
if (!base_filename.len) {
MP_WARN(tl, "CUE: Invalid audio filename in .cue file!\n");
} else {
char *fullname = mp_path_join_bstr(ctx, dirname, base_filename);
if (try_open(tl, fullname)) {
res = true;
goto out;
}
}
// Try an audio file with the same name as the .cue file (but different
// extension).
// Rationale: this situation happens easily if the audio file or both files
// are renamed.
struct bstr cuefile =
bstr_strip_ext(bstr0(mp_basename(tl->demuxer->filename)));
DIR *d = opendir(bstrdup0(ctx, dirname));
if (!d)
goto out;
struct dirent *de;
while ((de = readdir(d))) {
char *dename0 = de->d_name;
struct bstr dename = bstr0(dename0);
if (bstr_case_startswith(dename, cuefile)) {
MP_WARN(tl, "CUE: No useful audio filename "
"in .cue file found, trying with '%s' instead!\n",
dename0);
if (try_open(tl, mp_path_join_bstr(ctx, dirname, dename))) {
res = true;
break;
}
}
}
closedir(d);
out:
talloc_free(ctx);
if (!res)
MP_ERR(tl, "CUE: Could not open audio file!\n");
return res;
}
static void build_timeline(struct timeline *tl)
{
struct priv *p = tl->demuxer->priv;
void *ctx = talloc_new(NULL);
add_source(tl, tl->demuxer);
struct cue_track *tracks = NULL;
size_t track_count = 0;
for (size_t n = 0; n < p->f->num_tracks; n++) {
struct cue_track *track = &p->f->tracks[n];
if (track->filename) {
MP_TARRAY_APPEND(ctx, tracks, track_count, *track);
} else {
MP_WARN(tl->demuxer, "No file specified for track entry %zd. "
"It will be removed\n", n + 1);
}
}
if (track_count == 0) {
MP_ERR(tl, "CUE: no tracks found!\n");
goto out;
}
// Remove duplicate file entries. This might be too sophisticated, since
// CUE files usually use either separate files for every single track, or
// only one file for all tracks.
char **files = 0;
size_t file_count = 0;
for (size_t n = 0; n < track_count; n++) {
struct cue_track *track = &tracks[n];
track->source = -1;
for (size_t file = 0; file < file_count; file++) {
if (strcmp(files[file], track->filename) == 0) {
track->source = file;
break;
}
}
if (track->source == -1) {
file_count++;
files = talloc_realloc(ctx, files, char *, file_count);
files[file_count - 1] = track->filename;
track->source = file_count - 1;
}
}
for (size_t i = 0; i < file_count; i++) {
if (!open_source(tl, files[i]))
goto out;
}
struct timeline_part *timeline = talloc_array_ptrtype(tl, timeline,
track_count + 1);
struct demux_chapter *chapters = talloc_array_ptrtype(tl, chapters,
track_count);
double starttime = 0;
for (int i = 0; i < track_count; i++) {
struct demuxer *source = tl->sources[1 + tracks[i].source];
double duration;
if (i + 1 < track_count && tracks[i].source == tracks[i + 1].source) {
duration = tracks[i + 1].start - tracks[i].start;
} else {
duration = source->duration;
// Two cases: 1) last track of a single-file cue, or 2) any track of
// a multi-file cue. We need to do this for 1) only because the
// timeline needs to be terminated with the length of the last
// track.
duration -= tracks[i].start;
}
if (duration < 0) {
MP_WARN(tl, "CUE: Can't get duration of source file!\n");
// xxx: do something more reasonable
duration = 0.0;
}
timeline[i] = (struct timeline_part) {
.start = starttime,
.end = starttime + duration,
.source_start = tracks[i].start,
.source = source,
};
chapters[i] = (struct demux_chapter) {
.pts = timeline[i].start,
.metadata = mp_tags_dup(tl, tracks[i].tags),
};
starttime = timeline[i].end;
}
struct timeline_par *par = talloc_ptrtype(tl, par);
*par = (struct timeline_par){
.parts = timeline,
.num_parts = track_count,
.track_layout = timeline[0].source,
};
tl->chapters = chapters;
tl->num_chapters = track_count;
MP_TARRAY_APPEND(tl, tl->pars, tl->num_pars, par);
tl->meta = par->track_layout;
tl->format = "cue";
out:
talloc_free(ctx);
}
static int try_open_file(struct demuxer *demuxer, enum demux_check check)
{
if (!demuxer->access_references)
return -1;
struct stream *s = demuxer->stream;
if (check >= DEMUX_CHECK_UNSAFE) {
stream: turn into a ring buffer, make size configurable In some corner cases (see #6802), it can be beneficial to use a larger stream buffer size. Use this as argument to rewrite everything for no reason. Turn stream.c itself into a ring buffer, with configurable size. The latter would have been easily achievable with minimal changes, and the ring buffer is the hard part. There is no reason to have a ring buffer at all, except possibly if ffmpeg don't fix their awful mp4 demuxer, and some subtle issues with demux_mkv.c wanting to seek back by small offsets (the latter was handled with small stream_peek() calls, which are unneeded now). In addition, this turns small forward seeks into reads (where data is simply skipped). Before this commit, only stream_skip() did this (which also mean that stream_skip() simply calls stream_seek() now). Replace all stream_peek() calls with something else (usually stream_read_peek()). The function was a problem, because it returned a pointer to the internal buffer, which is now a ring buffer with wrapping. The new function just copies the data into a buffer, and in some cases requires callers to dynamically allocate memory. (The most common case, demux_lavf.c, required a separate buffer allocation anyway due to FFmpeg "idiosyncrasies".) This is the bulk of the demuxer_* changes. I'm not happy with this. There still isn't a good reason why there should be a ring buffer, that is complex, and most of the time just wastes half of the available memory. Maybe another rewrite soon. It also contains bugs; you're an alpha tester now.
2019-11-06 20:36:02 +00:00
char probe[PROBE_SIZE];
int len = stream_read_peek(s, probe, sizeof(probe));
if (len < 1 || !mp_probe_cue((bstr){probe, len}))
return -1;
}
struct priv *p = talloc_zero(demuxer, struct priv);
demuxer->priv = p;
demuxer->fully_read = true;
bstr data = stream_read_complete(s, p, 1000000);
if (data.start == NULL)
return -1;
struct demux_opts *opts = mp_get_config_group(p, demuxer->global, &demux_conf);
const char *charset = mp_charset_guess(p, demuxer->log, data, opts->meta_cp, 0);
if (charset && !mp_charset_is_utf8(charset)) {
MP_INFO(demuxer, "Using CUE charset: %s\n", charset);
bstr utf8 = mp_iconv_to_utf8(demuxer->log, data, charset, MP_ICONV_VERBOSE);
if (utf8.start && utf8.start != data.start) {
ta_steal(data.start, utf8.start);
data = utf8;
}
}
talloc_free(opts);
p->f = mp_parse_cue(data);
talloc_steal(p, p->f);
if (!p->f) {
MP_ERR(demuxer, "error parsing input file!\n");
return -1;
}
demux_close_stream(demuxer);
mp_tags_merge(demuxer->metadata, p->f->tags);
return 0;
}
const struct demuxer_desc demuxer_desc_cue = {
.name = "cue",
.desc = "CUE sheet",
.open = try_open_file,
.load_timeline = build_timeline,
};