gui: Do not decode the pressed key multiple times.

[paraslash.git] / mp3_afh.c

diff --git a/mp3_afh.c b/mp3_afh.c
index 73e744ec44088c4d8c92c1e19c1e6bed8b5076a0..728b25b81f94aa177a1e74ae01fca07419f7fe90 100644 (file)
--- a/mp3_afh.c
+++ b/mp3_afh.c
@@ -1,8 +1,4 @@
-/*
- * Copyright (C) 2003 Andre Noll <maan@tuebingen.mpg.de>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2003 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
 
 /** \file mp3_afh.c para_server's mp3 audio format handler */
 
@@ -67,8 +63,6 @@ static const int mp3info_bitrate[2][3][14] = {
 };
 
 static const int frame_size_index[] = {24000, 72000, 72000};
-static const char *mode_text[] = {"stereo", "joint stereo", "dual channel", "mono", "invalid"};
-
 #ifdef HAVE_ID3TAG
 
 #include <id3tag.h>
@@ -238,7 +232,7 @@ static int replace_tag(char const *id, const char *val, struct id3_tag *id3_t,
        if (!val || !*val)
                return 0;
        fr = id3_frame_new(id);
-       PARA_DEBUG_LOG("frame desc: %s, %d fields\n", fr->description, fr->nfields);
+       PARA_DEBUG_LOG("frame desc: %s, %u fields\n", fr->description, fr->nfields);
 
        /* Frame 0 contains the encoding. We always use UTF-8. */
        field = id3_frame_field(fr, 0);
@@ -300,6 +294,9 @@ static int replace_tags(struct id3_tag *id3_t, struct taginfo *tags)
 static void free_tag(struct id3_tag *id3_t)
 {
        int i, j;
+
+       if (!id3_t)
+               return;
        for (i = 0; i < id3_t->nframes; i++) {
                struct id3_frame *fr = id3_t->frames[i];
                for (j = 0; j < fr->nfields; j++) {
@@ -337,29 +334,27 @@ static int mp3_rewrite_tags(const char *map, size_t mapsize,
        if (v2_tag) {
                PARA_NOTICE_LOG("replacing id3v2 tag\n");
                old_v2size = v2_tag->paddedsize;
-       } else if (!v1_tag) {
-               PARA_NOTICE_LOG("no id3 tags found, adding id3v2 tag\n");
+       } else {
+               PARA_NOTICE_LOG("adding id3v2 tag\n");
                v2_tag = id3_tag_new();
                assert(v2_tag);
        }
-       if (v2_tag) {
-               /*
-                * Turn off all options to avoid creating an extended header.
-                * id321 does not understand it.
-                */
-               id3_tag_options(v2_tag, ~0U, 0);
-               ret = replace_tags(v2_tag, tags);
-               if (ret < 0)
-                       goto out;
-               new_v2size = id3_tag_render(v2_tag, NULL);
-               v2_buffer = para_malloc(new_v2size);
-               id3_tag_render(v2_tag, v2_buffer);
-               PARA_INFO_LOG("writing v2 tag (%lu bytes)\n", new_v2size);
-               ret = write_all(fd, (char *)v2_buffer, new_v2size);
-               free(v2_buffer);
-               if (ret < 0)
-                       goto out;
-       }
+       /*
+        * Turn off all options to avoid creating an extended header.  id321
+        * does not understand it.
+        */
+       id3_tag_options(v2_tag, ~0U, 0);
+       ret = replace_tags(v2_tag, tags);
+       if (ret < 0)
+               goto out;
+       new_v2size = id3_tag_render(v2_tag, NULL);
+       v2_buffer = para_malloc(new_v2size);
+       id3_tag_render(v2_tag, v2_buffer);
+       PARA_INFO_LOG("writing v2 tag (%lu bytes)\n", new_v2size);
+       ret = write_all(fd, (char *)v2_buffer, new_v2size);
+       free(v2_buffer);
+       if (ret < 0)
+               goto out;
        data_sz = mapsize - old_v2size;
        if (v1_tag && data_sz >= 128)
                data_sz -= 128;
@@ -372,10 +367,8 @@ static int mp3_rewrite_tags(const char *map, size_t mapsize,
                ret = write_all(fd, (char *)v1_buffer, 128);
        }
 out:
-       if (v1_tag)
-               free_tag(v1_tag);
-       if (v2_tag)
-               free_tag(v2_tag);
+       free_tag(v1_tag);
+       free_tag(v2_tag);
        return ret;
 }
 
@@ -438,10 +431,13 @@ static int header_frequency(struct mp3header *h)
        return frequencies[h->version][h->freq];
 }
 
-static const char *header_mode(struct mp3header *h)
+static const char *header_mode(const struct mp3header *h)
 {
-       if (h->mode > 4)
-               h->mode = 4; /* invalid */
+       const char * const mode_text[] = {"stereo", "joint stereo",
+               "dual channel", "mono"};
+
+       if (h->mode >= ARRAY_SIZE(mode_text))
+               return "invalid";
        return mode_text[h->mode];
 }
 
@@ -656,14 +652,14 @@ static int mp3_read_info(unsigned char *map, size_t numbytes, int fd,
        afhi->channels = header_channels(&header);
        afhi->seconds_total = (tv2ms(&total_time) + 500) / 1000;
        tv_divide(afhi->chunks_total, &total_time, &afhi->chunk_tv);
-       PARA_DEBUG_LOG("%" PRIu32 "chunks, each %lums\n", afhi->chunks_total,
+       PARA_DEBUG_LOG("%" PRIu32 " chunks, each %lums\n", afhi->chunks_total,
                tv2ms(&afhi->chunk_tv));
+       set_max_chunk_size(afhi);
        ret = mp3_get_id3(map, numbytes, fd, &afhi->tags);
        afhi->techinfo = make_message("%cbr, %s, %s tags", vbr? 'v' : 'c',
                header_mode(&header), tag_versions[ret]);
        return 1;
 err_out:
-       PARA_ERROR_LOG("%s\n", para_strerror(-ret));
        free(afhi->chunk_table);
        return ret;
 }
@@ -679,23 +675,22 @@ static int mp3_get_file_info(char *map, size_t numbytes, int fd,
        ret = mp3_read_info((unsigned char *)map, numbytes, fd, afhi);
        if (ret < 0)
                return ret;
-       if (afhi->seconds_total < 2 || !afhi->chunks_total)
+       if (afhi->chunks_total == 0)
                return -E_MP3_INFO;
        return 1;
 }
 
-static const char* mp3_suffixes[] = {"mp3", NULL};
+static const char * const mp3_suffixes[] = {"mp3", NULL};
 
 /**
- * the init function of the mp3 audio format handler
+ * The mp3 audio format handler.
  *
- * \param afh pointer to the struct to initialize
+ * It does not depend on any libraries and is hence always compiled in.
  */
-void mp3_init(struct audio_format_handler *afh)
-{
-       afh->get_file_info = mp3_get_file_info;
-       afh->suffixes = mp3_suffixes;
+const struct audio_format_handler mp3_afh = {
+       .get_file_info = mp3_get_file_info,
+       .suffixes = mp3_suffixes,
 #ifdef HAVE_LIBID3TAG
-       afh->rewrite_tags = mp3_rewrite_tags;
+       .rewrite_tags = mp3_rewrite_tags,
 #endif /* HAVE_LIBID3TAG */
-}
+};