/*
- * Copyright (C) 1997-2013 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1997 Andre Noll <maan@tuebingen.mpg.de>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
#include "string.h"
#include "afh.h"
-/* The mp3 audio format handler does not need any libs. */
-void mp3_init(struct audio_format_handler *);
-
-#ifdef HAVE_OGGVORBIS
- void ogg_init(struct audio_format_handler *);
-#endif
-#ifdef HAVE_FAAD
- void aac_afh_init(struct audio_format_handler *);
-#endif
-#ifdef HAVE_SPEEX
- void spx_afh_init(struct audio_format_handler *);
-#endif
-#ifdef HAVE_FLAC
- void flac_afh_init(struct audio_format_handler *);
-#endif
-
-void wma_afh_init(struct audio_format_handler *);
+typedef void afh_init_func(struct audio_format_handler *);
+/* It does not hurt to declare init functions which are not available. */
+extern afh_init_func mp3_init, ogg_init, aac_afh_init, wma_afh_init,
+ spx_afh_init, flac_afh_init, opus_afh_init;
/** The list of all status items */
const char *status_item_list[] = {STATUS_ITEM_ARRAY};
},
{
.name = "ogg",
-#ifdef HAVE_OGGVORBIS
+#if defined(HAVE_OGG) && defined(HAVE_VORBIS)
.init = ogg_init,
#endif
},
{
.name = "aac",
-#ifdef HAVE_FAAD
+#if defined(HAVE_MP4V2)
.init = aac_afh_init,
#endif
},
},
{
.name = "spx",
-#ifdef HAVE_SPEEX
+#if defined(HAVE_OGG) && defined(HAVE_SPEEX)
.init = spx_afh_init,
#endif
},
{
.name = "flac",
-#ifdef HAVE_FLAC
+#if defined(HAVE_OGG) && defined(HAVE_FLAC)
.init = flac_afh_init,
+#endif
+ },
+ {
+ .name = "opus",
+#if defined(HAVE_OGG) && defined(HAVE_OPUS)
+ .init = opus_afh_init,
#endif
},
{
{
int i;
- PARA_INFO_LOG("supported audio formats: %s\n", AUDIO_FORMAT_HANDLERS);
+ PARA_NOTICE_LOG("supported audio formats: %s\n", AUDIO_FORMAT_HANDLERS);
FOR_EACH_AUDIO_FORMAT(i) {
- PARA_NOTICE_LOG("initializing %s handler\n",
+ PARA_INFO_LOG("initializing %s handler\n",
audio_format_name(i));
afl[i].init(&afl[i]);
}
return -E_AUDIO_FORMAT;
}
+/**
+ * Get the name of the given audio format.
+ *
+ * \param i The audio format number.
+ *
+ * \return This returns a pointer to statically allocated memory so it
+ * must not be freed by the caller.
+ */
+const char *audio_format_name(int i)
+{
+ if (i < 0 || i >= ARRAY_SIZE(afl) - 1)
+ return "???";
+ return afl[i].name;
+}
+
+static int get_file_info(int format, const char *path, char *data,
+ size_t size, int fd, struct afh_info *afhi)
+{
+ int ret;
+ const char *fmt = audio_format_name(format);
+
+ memset(afhi, 0, sizeof(*afhi));
+ ret = afl[format].get_file_info(data, size, fd, afhi);
+ if (ret < 0) {
+ PARA_WARNING_LOG("%s: %s format not detected: %s\n",
+ path, fmt, para_strerror(-ret));
+ return ret;
+ }
+ PARA_NOTICE_LOG("%s: detected %s format\n", path, fmt);
+ return format;
+}
+
/**
* Call get_file_info() to obtain an afhi structure.
*
{
int ret, i, format;
- afhi->header_len = 0;
- afhi->techinfo = NULL;
- afhi->tags.artist = NULL;
- afhi->tags.title = NULL;
- afhi->tags.year = NULL;
- afhi->tags.album = NULL;
- afhi->tags.comment = NULL;
format = guess_audio_format(path);
-
if (format >= 0) {
- ret = afl[format].get_file_info(data, size, fd, afhi);
- if (ret >= 0) {
- ret = format;
+ ret = get_file_info(format, path, data, size, fd, afhi);
+ if (ret >= 0)
goto success;
- }
}
FOR_EACH_AUDIO_FORMAT(i) {
if (i == format) /* we already tried this one to no avail */
continue;
- ret = afl[i].get_file_info(data, size, fd, afhi);
- if (ret >= 0) {
- ret = i;
+ ret = get_file_info(i, path, data, size, fd, afhi);
+ if (ret >= 0)
goto success;
- }
- PARA_WARNING_LOG("%s\n", para_strerror(-ret));
}
return -E_AUDIO_FORMAT;
success:
}
/**
- * Deallocate contents of a filled-in ahi structure
+ * Deallocate the contents of an afh_info structure.
*
* \param afhi The structure to clear.
*
- * The given pointer is kept, everything else is freed.
+ * This only frees the memory the various pointer fields of \a afhi point to.
+ * It does *not* free \a afhi itself.
*/
void clear_afhi(struct afh_info *afhi)
{
free(afhi->tags.comment);
}
-/**
- * Get the name of the given audio format.
- *
- * \param i The audio format number.
- *
- * \return This returns a pointer to statically allocated memory so it
- * must not be freed by the caller.
- */
-const char *audio_format_name(int i)
+static inline size_t get_chunk_len(long unsigned chunk_num,
+ const struct afh_info *afhi)
{
- if (i < 0 || i >= ARRAY_SIZE(afl) - 1)
- return "???";
- return afl[i].name;
+ return afhi->chunk_table[chunk_num + 1] - afhi->chunk_table[chunk_num];
}
/**
{
size_t pos = afhi->chunk_table[chunk_num];
*buf = map + pos;
- *len = afhi->chunk_table[chunk_num + 1] - pos;
+ *len = get_chunk_len(chunk_num, afhi);
+}
+
+/**
+ * Find a suitable start chunk.
+ *
+ * \param approx_chunk_num Upper bound for the chunk number to return.
+ * \param afhi Needed for the chunk table.
+ *
+ * \return The first non-empty chunk <= \a approx_chunk_num.
+ *
+ * \sa \ref afh_get_chunk().
+ */
+int32_t afh_get_start_chunk(int32_t approx_chunk_num,
+ const struct afh_info *afhi)
+{
+ int32_t k;
+
+ for (k = PARA_MAX(0, approx_chunk_num); k >= 0; k--)
+ if (get_chunk_len(k, afhi) > 0)
+ break;
+ return k;
}
/**
"%s: %s\n" /* format */
"%s: %dHz\n" /* frequency */
"%s: %d\n" /* channels */
- "%s: %lu\n" /* seconds total */
+ "%s: %" PRIu32 "\n" /* seconds total */
"%s: %lu: %lu\n" /* chunk time */
- "%s: %lu\n" /* num chunks */
+ "%s: %" PRIu32 "\n" /* num chunks */
"%s: %s\n" /* techinfo */
"%s: %s\n" /* artist */
"%s: %s\n" /* title */
status_item_list[SI_COMMENT], afhi->tags.comment? afhi->tags.comment : ""
);
}
+
+/**
+ * Create a copy of the given file with altered meta tags.
+ *
+ * \param audio_format_id Specifies the audio format.
+ * \param map The (read-only) memory map of the input file.
+ * \param mapsize The size of the input file in bytes.
+ * \param tags The new tags.
+ * \param output_fd Altered file is created using this file descriptor.
+ * \param filename The name of the temporary output file.
+ *
+ * This calls the ->rewrite_tags method of the audio format handler associated
+ * with \a audio_format_id to create a copy of the memory-mapped file given
+ * by \a map and \a mapsize, but with altered tags according to \a tags. If
+ * the audio format handler for \a audio_format_id lacks this optional method,
+ * the function returns (the paraslash error code of) \p ENOTSUP.
+ *
+ * \return Standard.
+ */
+int afh_rewrite_tags(int audio_format_id, void *map, size_t mapsize,
+ struct taginfo *tags, int output_fd, const char *filename)
+{
+ struct audio_format_handler *afh = afl + audio_format_id;
+
+ if (!afh->rewrite_tags)
+ return -ERRNO_TO_PARA_ERROR(ENOTSUP);
+ return afh->rewrite_tags(map, mapsize, tags, output_fd, filename);
+}
projects / paraslash.git / blobdiff