From 7f03f46882ec4e9eb9d9857cf5cc393bb3afa7ca Mon Sep 17 00:00:00 2001 From: wm4 Date: Tue, 17 Feb 2015 23:48:03 +0100 Subject: demux_cue: move implementation Move the implementation, of which most was in tl_cue.c, to demux_cue.c. Currently, this is illogical, because tl_cue.c still accesses MPContext. This is going to change, and then it will be better if everything is in demux_cue.c. This is only a separate commit to distinguish code movement and actual work; the next commit will do the actual work. --- player/timeline/tl_cue.c | 415 ----------------------------------------------- 1 file changed, 415 deletions(-) delete mode 100644 player/timeline/tl_cue.c (limited to 'player/timeline/tl_cue.c') diff --git a/player/timeline/tl_cue.c b/player/timeline/tl_cue.c deleted file mode 100644 index d9541c5691..0000000000 --- a/player/timeline/tl_cue.c +++ /dev/null @@ -1,415 +0,0 @@ -/* - * This file is part of mplayer2. - * - * mplayer2 is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * mplayer2 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 - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with mplayer2; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include -#include -#include -#include - -#include "talloc.h" - -#include "player/core.h" -#include "common/msg.h" -#include "demux/demux.h" -#include "options/path.h" -#include "misc/bstr.h" -#include "common/common.h" -#include "stream/stream.h" - -// used by demuxer_cue.c -bool mp_probe_cue(struct bstr data); - -#define SECS_PER_CUE_FRAME (1.0/75.0) - -enum cue_command { - CUE_ERROR = -1, // not a valid CUE command, or an unknown extension - CUE_EMPTY, // line with whitespace only - CUE_UNUSED, // valid CUE command, but ignored by this code - CUE_FILE, - CUE_TRACK, - CUE_INDEX, - CUE_TITLE, -}; - -static const struct { - enum cue_command command; - const char *text; -} cue_command_strings[] = { - { CUE_FILE, "FILE" }, - { CUE_TRACK, "TRACK" }, - { CUE_INDEX, "INDEX" }, - { CUE_TITLE, "TITLE" }, - { CUE_UNUSED, "CATALOG" }, - { CUE_UNUSED, "CDTEXTFILE" }, - { CUE_UNUSED, "FLAGS" }, - { CUE_UNUSED, "ISRC" }, - { CUE_UNUSED, "PERFORMER" }, - { CUE_UNUSED, "POSTGAP" }, - { CUE_UNUSED, "PREGAP" }, - { CUE_UNUSED, "REM" }, - { CUE_UNUSED, "SONGWRITER" }, - { CUE_UNUSED, "MESSAGE" }, - { -1 }, -}; - -struct cue_track { - double pregap_start; // corresponds to INDEX 00 - double start; // corresponds to INDEX 01 - struct bstr filename; - int source; - struct bstr title; -}; - -static enum cue_command read_cmd(struct bstr *data, struct bstr *out_params) -{ - struct bstr line = bstr_strip_linebreaks(bstr_getline(*data, data)); - line = bstr_lstrip(line); - if (line.len == 0) - return CUE_EMPTY; - for (int n = 0; cue_command_strings[n].command != -1; n++) { - struct bstr name = bstr0(cue_command_strings[n].text); - if (bstr_startswith(line, name)) { - struct bstr rest = bstr_cut(line, name.len); - if (rest.len && !strchr(WHITESPACE, rest.start[0])) - continue; - if (out_params) - *out_params = rest; - return cue_command_strings[n].command; - } - } - return CUE_ERROR; -} - -static bool eat_char(struct bstr *data, char ch) -{ - if (data->len && data->start[0] == ch) { - *data = bstr_cut(*data, 1); - return true; - } else { - return false; - } -} - -static struct bstr read_quoted(struct bstr *data) -{ - *data = bstr_lstrip(*data); - if (!eat_char(data, '"')) - return (struct bstr) {0}; - int end = bstrchr(*data, '"'); - if (end < 0) - return (struct bstr) {0}; - struct bstr res = bstr_splice(*data, 0, end); - *data = bstr_cut(*data, end + 1); - return res; -} - -// Read a 2 digit unsigned decimal integer. -// Return -1 on failure. -static int read_int_2(struct bstr *data) -{ - *data = bstr_lstrip(*data); - if (data->len && data->start[0] == '-') - return -1; - struct bstr s = *data; - int res = (int)bstrtoll(s, &s, 10); - if (data->len == s.len || data->len - s.len > 2) - return -1; - *data = s; - return res; -} - -static double read_time(struct bstr *data) -{ - struct bstr s = *data; - bool ok = true; - double t1 = read_int_2(&s); - ok = eat_char(&s, ':') && ok; - double t2 = read_int_2(&s); - ok = eat_char(&s, ':') && ok; - double t3 = read_int_2(&s); - ok = ok && t1 >= 0 && t2 >= 0 && t3 >= 0; - return ok ? t1 * 60.0 + t2 + t3 * SECS_PER_CUE_FRAME : 0; -} - -static struct bstr skip_utf8_bom(struct bstr data) -{ - return bstr_startswith0(data, "\xEF\xBB\xBF") ? bstr_cut(data, 3) : data; -} - -// Check if the text in data is most likely CUE data. This is used by the -// demuxer code to check the file type. -// data is the start of the probed file, possibly cut off at a random point. -bool mp_probe_cue(struct bstr data) -{ - bool valid = false; - data = skip_utf8_bom(data); - for (;;) { - enum cue_command cmd = read_cmd(&data, NULL); - // End reached. Since the line was most likely cut off, don't use the - // result of the last parsing call. - if (data.len == 0) - break; - if (cmd == CUE_ERROR) - return false; - if (cmd != CUE_EMPTY) - valid = true; - } - return valid; -} - -static void add_source(struct MPContext *mpctx, struct demuxer *d) -{ - MP_TARRAY_APPEND(NULL, mpctx->sources, mpctx->num_sources, d); -} - -static bool try_open(struct MPContext *mpctx, 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(mpctx->demuxer->filename), bfilename) == 0) - return false; - - struct stream *s = stream_open(filename, mpctx->global); - if (!s) - return false; - struct demuxer *d = demux_open(s, NULL, NULL, mpctx->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(mpctx, "CUE: Opening as BIN file!\n"); - d = demux_open(s, "rawaudio", NULL, mpctx->global); - } - if (d) { - add_source(mpctx, d); - return true; - } - MP_ERR(mpctx, "Could not open source '%s'!\n", filename); - free_stream(s); - return false; -} - -static bool open_source(struct MPContext *mpctx, struct bstr filename) -{ - void *ctx = talloc_new(NULL); - bool res = false; - - struct bstr dirname = mp_dirname(mpctx->demuxer->filename); - - struct bstr base_filename = bstr0(mp_basename(bstrdup0(ctx, filename))); - if (!base_filename.len) { - MP_WARN(mpctx, "CUE: Invalid audio filename in .cue file!\n"); - } else { - char *fullname = mp_path_join(ctx, dirname, base_filename); - if (try_open(mpctx, 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(mpctx->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(mpctx, "CUE: No useful audio filename " - "in .cue file found, trying with '%s' instead!\n", - dename0); - if (try_open(mpctx, mp_path_join(ctx, dirname, dename))) { - res = true; - break; - } - } - } - closedir(d); - -out: - talloc_free(ctx); - if (!res) - MP_ERR(mpctx, "CUE: Could not open audio file!\n"); - return res; -} - -// return length of the source in seconds, or -1 if unknown -static double source_get_length(struct demuxer *demuxer) -{ - double get_time_ans; - // <= 0 means DEMUXER_CTRL_NOTIMPL or DEMUXER_CTRL_DONTKNOW - if (demuxer && demux_control(demuxer, DEMUXER_CTRL_GET_TIME_LENGTH, - (void *) &get_time_ans) > 0) - { - return get_time_ans; - } else { - return -1; - } -} - -void build_cue_timeline(struct MPContext *mpctx) -{ - void *ctx = talloc_new(NULL); - - struct bstr data = mpctx->demuxer->file_contents; - data = skip_utf8_bom(data); - - struct cue_track *tracks = NULL; - size_t track_count = 0; - - struct bstr filename = {0}; - // Global metadata, and copied into new tracks. - struct cue_track proto_track = {0}; - struct cue_track *cur_track = &proto_track; - - while (data.len) { - struct bstr param; - switch (read_cmd(&data, ¶m)) { - case CUE_ERROR: - MP_ERR(mpctx, "CUE: error parsing input file!\n"); - goto out; - case CUE_TRACK: { - track_count++; - tracks = talloc_realloc(ctx, tracks, struct cue_track, track_count); - cur_track = &tracks[track_count - 1]; - *cur_track = proto_track; - break; - } - case CUE_TITLE: - cur_track->title = read_quoted(¶m); - break; - case CUE_INDEX: { - int type = read_int_2(¶m); - double time = read_time(¶m); - if (type == 1) { - cur_track->start = time; - cur_track->filename = filename; - } else if (type == 0) { - cur_track->pregap_start = time; - } - break; - } - case CUE_FILE: - // NOTE: FILE comes before TRACK, so don't use cur_track->filename - filename = read_quoted(¶m); - break; - } - } - - if (track_count == 0) { - MP_ERR(mpctx, "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. - - struct bstr *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 (bstrcmp(files[file], track->filename) == 0) { - track->source = file; - break; - } - } - if (track->source == -1) { - file_count++; - files = talloc_realloc(ctx, files, struct bstr, 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(mpctx, files[i])) - goto out; - } - - struct timeline_part *timeline = talloc_array_ptrtype(NULL, timeline, - track_count + 1); - struct demux_chapter *chapters = talloc_array_ptrtype(NULL, chapters, - track_count); - double starttime = 0; - for (int i = 0; i < track_count; i++) { - struct demuxer *source = mpctx->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_get_length(source); - // 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(mpctx, "CUE: Can't get duration of source file!\n"); - // xxx: do something more reasonable - duration = 0.0; - } - timeline[i] = (struct timeline_part) { - .start = starttime, - .source_start = tracks[i].start, - .source = source, - }; - chapters[i] = (struct demux_chapter) { - .pts = timeline[i].start, - // might want to include other metadata here - .name = bstrdup0(chapters, tracks[i].title), - }; - starttime += duration; - } - - // apparently we need this to give the last part a non-zero length - timeline[track_count] = (struct timeline_part) { - .start = starttime, - // perhaps unused by the timeline code - .source_start = 0, - .source = timeline[0].source, - }; - - mpctx->timeline = timeline; - // the last part is not included it in the count - mpctx->num_timeline_parts = track_count + 1 - 1; - mpctx->chapters = chapters; - mpctx->num_chapters = track_count; - mpctx->track_layout = mpctx->timeline[0].source; - -out: - talloc_free(ctx); -} -- cgit v1.2.3